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[Launchpad Bug Tracker <1454687@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.19.0-23.24

---------------
linux (3.19.0-23.24) vivid; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1472346

  [ Chris J Arges ]

  * SAUCE: Don't use atomic read in evlist.c
    - LP: #1410673

linux (3.19.0-23.23) vivid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1472048

  [ Chris J Arges ]

  * [Config] Add CRYPTO_DEV_NX_*, 842_* as modules
    - LP: #1454687

  [ Lu, Han ]

  * SAUCE: i915_bpo: drm/i915/audio: add codec wakeup override
    enabled/disable callback
    - LP: #1460674

  [ Timo Aaltonen ]

  * SAUCE: Backport I915_OVERLAY_DISABLE_DEST_COLORKEY
    - LP: #1460674
  * SAUCE: i915_bpo: Rebase to drm-intel-next-fixes-2015-05-29
    - LP: #1460674
  * SAUCE: i915_bpo: Revert "drm/i915: Implement the intel_dp_autotest_edid
    function for DP EDID complaince tests"
    - LP: #1460674
  * SAUCE: i915_bpo: Revert "drm/i915: Add debugfs test control files for
    Displayport compliance testing"
    - LP: #1460674
  * SAUCE: Load i915_bpo from the hda driver on SKL/CHV
    - LP: #1460674
  * SAUCE: i915_bpo: Don't try to support BXT
    - LP: #1460674
  * SAUCE: i915_bpo: drm/i915/skl: Fix DMC API version.

  [ Upstream Kernel Changes ]

  * Revert "usb: dwc2: add bus suspend/resume for dwc2"
    - LP: #1471252
  * Revert "HID: logitech-hidpp: support combo keyboard touchpad TK820"
    - LP: #1471252
  * Revert "KVM: x86: drop fpu_activate hook"
    - LP: #1471252
  * Revert "libceph: clear r_req_lru_item in __unregister_linger_request()"
    - LP: #1471252
  * drm/i915: add component support
    - LP: #1460661
  * ALSA: hda: export struct hda_intel
    - LP: #1460661
  * ALSA: hda: pass intel_hda to all i915 interface functions
    - LP: #1460661
  * ALSA: hda: add component support
    - LP: #1460661
  * drm/atomic-helpers: Fix documentation typos and wrong copy&paste
    - LP: #1460674
  * drm/atomic: Rename drm_atomic_helper_commit_pre_planes() state argument
    - LP: #1460674
  * drm/atomic-helper: Rename commmit_post/pre_planes
    - LP: #1460674
  * drm/atomic-helpers: make mode_set hooks optional
    - LP: #1460674
  * drm/atomic-helper: Fix kerneldoc for prepare_planes
    - LP: #1460674
  * drm: Complete moving rotation property to core
    - LP: #1460674
  * drm: Share plane pixel format check code between legacy and atomic
    - LP: #1460674
  * drm/atomic: Constify a bunch of functions pointer structs
    - LP: #1460674
  * drm: Fix some typo mistake of the annotations
    - LP: #1460674
  * drm: change connector to tmp_connector
    - LP: #1460674
  * drm: atomic: Expose CRTC active property
    - LP: #1460674
  * drm: atomic: Allow setting CRTC active property
    - LP: #1460674
  * drm/atomic-helpers: Properly avoid full modeset dance
    - LP: #1460674
  * drm/atomic: Add helpers for state-subclassing drivers
    - LP: #1460674
  * drm: Fix some typos
    - LP: #1460674
  * drm/atomic: Add for_each_{connector,crtc,plane}_in_state helper macros
    - LP: #1460674
  * drm/atomic-helper: Don't call atomic_update_plane when it stays off
    - LP: #1460674
  * drm/atomic-helper: Really recover pre-atomic plane/cursor behavior
    - LP: #1460674
  * drm/atomic: Make mode_fixup() optional for check_modeset()
    - LP: #1460674
  * drm/atomic-helpers: Update vblank timestamping constants
    - LP: #1460674
  * drm/atomic-helpers: Export
    drm_atomic_helper_update_legacy_modeset_state
    - LP: #1460674
  * drm/atomic: add drm_atomic_get_existing_*_state helpers
    - LP: #1460674
  * drm/atomic: remove duplicated assignment of old_plane_state
    - LP: #1460674
  * drm/atomic: Allow drivers to subclass drm_atomic_state, v3
    - LP: #1460674
  * drm/dp: indentation and ordering cleanups
    - LP: #1460674
  * drm/dp: add DPCD definitions from eDP 1.2
    - LP: #1460674
  * drm/dp: add DPCD definitions from DP 1.1 and 1.2a
    - LP: #1460674
  * drm/dp: add DPCD definitions from eDP 1.4
    - LP: #1460674
  * drm: Adding drm helper function drm_plane_from_index().
    - LP: #1460674
  * ALSA: hda - reset display codec when power on
    - LP: #1460674
  * drm/i915/audio: add codec wakeup override enabled/disable callback
    - LP: #1460674
  * scsi: storvsc: Increase the ring buffer size
    - LP: #1445195
  * scsi: storvsc: Size the queue depth based on the ringbuffer size
    - LP: #1445195
  * scsi: storvsc: Always send on the selected outgoing channel
    - LP: #1445195
  * scsi: storvsc: Retrieve information about the capability of the target
    - LP: #1445195
  * scsi: storvsc: Don't assume that the scatterlist is not chained
    - LP: #1445195
  * scsi: storvsc: Set the tablesize based on the information given by the
    host
    - LP: #1445195
  * Drivers: hv: vmbus: Add support for VMBus panic notifier handler
    - LP: #1463584
  * Drivers: hv: vmbus: Correcting truncation error for constant
    HV_CRASH_CTL_CRASH_NOTIFY
    - LP: #1463584
  * net: eth: xgene: change APM X-Gene SoC platform ethernet to support
    ACPI
    - LP: #1458042
  * net: eth: xgene: devm_ioremap() returns NULL on error
    - LP: #1458042
  * drivers: net: xgene: Make xgene_enet_of_match depend on CONFIG_OF
    - LP: #1458042
  * Documentation: dts: Update compatible field description for APM X-Gene
    - LP: #1458042
  * dtb: change binding name to match with newer firmware DT
    - LP: #1458042
  * drivers: net: xgene: fix new firmware backward compatibility with older
    driver
    - LP: #1458042
  * net: eth: xgene: fix booting with devicetree
    - LP: #1458042
  * drivers: net: xgene: constify of_device_id array
    - LP: #1458042
  * Documentation: dtb: Add port-id field for APM X-Gene ethernet
    - LP: #1458042
  * dtb: xgene: Add second SGMII based 1G interface node
    - LP: #1458042
  * drivers: net: xgene: Add second SGMII based 1G interface
    - LP: #1458042
  * x86/fpu: Disable XSAVES* support for now
    - LP: #1468797
  * powerpc: export of_get_ibm_chip_id function
    - LP: #1454687
  * powerpc: Add ICSWX instruction
    - LP: #1454687
  * lib: add software 842 compression/decompression
    - LP: #1454687
  * crypto: 842 - change 842 alg to use software
    - LP: #1454687
  * crypto: nx - rename nx-842.c to nx-842-pseries.c
    - LP: #1454687
  * crypto: nx - add NX-842 platform frontend driver
    - LP: #1454687
  * crypto: nx - add nx842 constraints
    - LP: #1454687
  * crypto: nx - add PowerNV platform NX-842 driver
    - LP: #1454687
  * crypto: nx - simplify pSeries nx842 driver
    - LP: #1454687
  * crypto: nx - add hardware 842 crypto comp alg
    - LP: #1454687
  * lib: make lib/842 decompress functions static
    - LP: #1454687
  * lib: correct 842 decompress for 32 bit
    - LP: #1454687
  * crypto: nx - remove 842-nx null checks
    - LP: #1454687
  * crypto: nx - prevent nx 842 load if no hw driver
    - LP: #1454687
  * crypto: nx - fix nx-842 pSeries driver minimum buffer size
    - LP: #1454687
  * crypto: nx - move include/linux/nx842.h into drivers/crypto/nx/nx-842.h
    - LP: #1454687
  * crypto: nx - replace NX842_MEM_COMPRESS with function
    - LP: #1454687
  * crypto: nx - add LE support to pSeries platform driver
    - LP: #1454687
  * net/mlx4_en: Disbale GRO for incoming loopback/selftest packets
    - LP: #1432848
  * mm/slab_common: support the slub_debug boot option on specific object
    size
    - LP: #1456952
  * perf trace: Fix race condition at the end of started workloads
    - LP: #1410673
  * kvm: x86: fix kvm_apic_has_events to check for NULL pointer
  * cpuidle: powernv/pseries: Auto-promotion of snooze to deeper idle state
    - LP: #1470404
  * IB/ipoib: change init sequence ordering
    - LP: #1467912
  * IB/ipoib: factor out ah flushing
    - LP: #1467912
  * HID: add ALWAYS_POLL quirk for a Logitech 0xc007
    - LP: #1471252
  * HID: add HP OEM mouse to quirk ALWAYS_POLL
    - LP: #1471252
  * HID: add quirk for PIXART OEM mouse used by HP
    - LP: #1471252
  * usb: dwc2: hcd: use new USB_RESUME_TIMEOUT
    - LP: #1471252
  * usb: isp1760: hcd: use new USB_RESUME_TIMEOUT
    - LP: #1471252
  * nfsd: fix nsfd startup race triggering BUG_ON
    - LP: #1471252
  * jhash: Update jhash_[321]words functions to use correct initval
    - LP: #1471252
  * firmware/ihex2fw.c: restore missing default in switch statement
    - LP: #1471252
  * bridge/mdb: remove wrong use of NLM_F_MULTI
    - LP: #1471252
  * iio/axp288_adc: add missing channel info mask
    - LP: #1471252
  * iio: light: hid-sensor-prox: Fix modifier
    - LP: #1471252
  * iio: pressure: hid-sensor-press: Fix modifier
    - LP: #1471252
  * iio: adc: xilinx: Fix register addresses
    - LP: #1471252
  * iio: adc: xilinx: Fix "vccaux" channel .address
    - LP: #1471252
  * iio: adc: xilinx: Fix VREFP scale
    - LP: #1471252
  * iio: adc: xilinx: Fix VREFN sign
    - LP: #1471252
  * libata: Add helper to determine when PHY events should be ignored
    - LP: #1471252
  * libata: Ignore spurious PHY event on LPM policy change
    - LP: #1471252
  * iio:st_sensors: Fix oops when probing SPI devices
    - LP: #1471252
  * usb: gadget: configfs: Fix interfaces array NULL-termination
    - LP: #1471252
  * rtlwifi: rtl8192cu: Fix kernel deadlock
    - LP: #1471252
  * USB: cp210x: add ID for KCF Technologies PRN device
    - LP: #1471252
  * USB: pl2303: Remove support for Samsung I330
    - LP: #1471252
  * USB: visor: Match I330 phone more precisely
    - LP: #1471252
  * net: can: xilinx_can: fix extended frame handling
    - LP: #1471252
  * nfsd: fix the check for confirmed openowner in
    nfs4_preprocess_stateid_op
    - LP: #1471252
  * svcrpc: fix potential GSSX_ACCEPT_SEC_CONTEXT decoding failures
    - LP: #1471252
  * ACPI / init: Fix the ordering of acpi_reserve_resources()
    - LP: #1471252
  * md/raid5: don't record new size if resize_stripes fails.
    - LP: #1471252
  * sched: Handle priority boosted tasks proper in setscheduler()
    - LP: #1471252
  * staging: vt6656: use ieee80211_tx_info to select packet type.
    - LP: #1471252
  * staging: vt6655: device_free_tx_buf use only
    ieee80211_tx_status_irqsafe
    - LP: #1471252
  * staging: vt6655: Fix 80211 control and management status reporting.
    - LP: #1471252
  * staging: vt6655: lock MACvWriteBSSIDAddress.
    - LP: #1471252
  * arm64: bpf: fix signedness bug in loading 64-bit immediate
    - LP: #1471252
  * xhci: fix isoc endpoint dequeue from advancing too far on transaction
    error
    - LP: #1471252
  * xhci: Solve full event ring by increasing TRBS_PER_SEGMENT to 256
    - LP: #1471252
  * xhci: gracefully handle xhci_irq dead device
    - LP: #1471252
  * ARC: unbork !LLSC build
    - LP: #1471252
  * staging: gdm724x: Correction of variable usage after applying ALIGN()
    - LP: #1471252
  * usb-storage: Add NO_WP_DETECT quirk for Lacie 059f:0651 devices
    - LP: #1471252
  * tty/n_gsm.c: fix a memory leak when gsmtty is removed
    - LP: #1471252
  * pty: Fix input race when closing
    - LP: #1429756, #1471252
  * ARM: net fix emit_udiv() for BPF_ALU | BPF_DIV | BPF_K intruction.
    - LP: #1471252
  * x86/vdso: Fix the x86 vdso2c tool includes
    - LP: #1471252
  * x86/vdso: Fix 'make bzImage' on older distros
    - LP: #1471252
  * perf/x86/rapl: Enable Broadwell-U RAPL support
    - LP: #1471252
  * net: qca_spi: Fix possible race during probe
    - LP: #1471252
  * drm/radeon: fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling
    - LP: #1471252
  * RDMA/core: Fix for parsing netlink string attribute
    - LP: #1471252
  * drm/radeon: add new bonaire pci id
    - LP: #1471252
  * parisc,metag: Fix crashes due to stack randomization on
    stack-grows-upwards architectures
    - LP: #1471252
  * net: phy: micrel: Fix regression in kszphy_probe
    - LP: #1471252
  * firmware: dmi_scan: Fix ordering of product_uuid
    - LP: #1471252
  * ext4: fix NULL pointer dereference when journal restart fails
    - LP: #1471252
  * ext4: check for zero length extent explicitly
    - LP: #1471252
  * jbd2: fix r_count overflows leading to buffer overflow in journal
    recovery
    - LP: #1471252
  * tools/vm: fix page-flags build
    - LP: #1471252
  * mm, numa: really disable NUMA balancing by default on single node
    machines
    - LP: #1471252
  * igb: Fix oops on changing number of rings
    - LP: #1471252
  * power/reset: at91: fix return value check in
    at91_reset_platform_probe()
    - LP: #1471252
  * spi: bitbang: Make setup_transfer() callback optional
    - LP: #1471252
  * iwlwifi: pcie: prevent using unmapped memory in fw monitor
    - LP: #1471252
  * x86: bpf_jit: fix FROM_BE16 and FROM_LE16/32 instructions
    - LP: #1471252
  * igb: Fix NULL assignment to incorrect variable in igb_reset_q_vector
    - LP: #1471252
  * thermal: rockchip: fix an error code
    - LP: #1471252
  * ARM: net: delegate filter to kernel interpreter when imm_offset()
    return value can't fit into 12bits.
    - LP: #1471252
  * ALSA: hda - Add headphone quirk for Lifebook E752
    - LP: #1471252
  * ASoC: mc13783: Fix wrong mask value used in mc13xxx_reg_rmw() calls
    - LP: #1471252
  * ASoC: uda1380: Avoid accessing i2c bus when codec is disabled
    - LP: #1471252
  * clk: exynos5420: Restore GATE_BUS_TOP on suspend
    - LP: #1471252
  * thermal: armada: Update Armada 380 thermal sensor coefficients
    - LP: #1471252
  * ALSA: hda/realtek - Support Dell headset mode for ALC256
    - LP: #1471252
  * ALSA: hda - fix headset mic detection problem for one more machine
    - LP: #1447909, #1471252
  * ALSA: hda - Add headset mic quirk for Dell Inspiron 5548
    - LP: #1452175, #1471252
  * mac80211: move WEP tailroom size check
    - LP: #1471252
  * KVM: MMU: fix smap permission check
    - LP: #1471252
  * KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages
    - LP: #1471252
  * KVM: MMU: fix SMAP virtualization
    - LP: #1471252
  * powerpc/mce: fix off by one errors in mce event handling
    - LP: #1471252
  * ASoC: dapm: Modify widget stream name according to prefix
    - LP: #1471252
  * ASoC: wm8960: fix "RINPUT3" audio route error
    - LP: #1471252
  * ASoC: wm8994: correct BCLK DIV 348 to 384
    - LP: #1471252
  * ktime: Optimize ktime_divns for constant divisors
    - LP: #1471252
  * ktime: Fix ktime_divns to do signed division
    - LP: #1471252
  * Input: elantech - fix semi-mt protocol for v3 HW
    - LP: #1471252
  * powerpc: Align TOC to 256 bytes
    - LP: #1471252
  * ALSA: hda - Add Conexant codecs CX20721, CX20722, CX20723 and CX20724
    - LP: #1454656, #1471252
  * ALSA: hda/realtek - ALC292 dock fix for Thinkpad L450
    - LP: #1471252
  * mmc: atmel-mci: fix bad variable type for clkdiv
    - LP: #1471252
  * sd: Disable support for 256 byte/sector disks
    - LP: #1471252
  * s390/mm: correct return value of pmd_pfn
    - LP: #1471252
  * xen/events: don't bind non-percpu VIRQs with percpu chip
    - LP: #1471252
  * kvm: fix crash in kvm_vcpu_reload_apic_access_page
    - LP: #1471252
  * kvm/fpu: Enable eager restore kvm FPU for MPX
    - LP: #1471252
  * libceph: request a new osdmap if lingering request maps to no osd
    - LP: #1471252
  * drm/radeon: retry dcpd fetch
    - LP: #1471252
  * crypto: s390/ghash - Fix incorrect ghash icv buffer handling.
    - LP: #1471252
  * ipvs: fix memory leak in ip_vs_ctl.c
    - LP: #1471252
  * rtnl/bond: don't send rtnl msg for unregistered iface
    - LP: #1471252
  * net: sched: fix call_rcu() race on classifier module unloads
    - LP: #1471252
  * conntrack: RFC5961 challenge ACK confuse conntrack LAST-ACK transition
    - LP: #1471252
  * net: phy: Allow EEE for all RGMII variants
    - LP: #1471252
  * bridge: fix parsing of MLDv2 reports
    - LP: #1471252
  * cdc_ncm: Fix tx_bytes statistics
    - LP: #1471252
  * ipv4: Avoid crashing in ip_error
    - LP: #1471252
  * ipv6: do not delete previously existing ECMP routes if add fails
    - LP: #1471252
  * net/ipv6/udp: Fix ipv6 multicast socket filter regression
    - LP: #1471252
  * ipv6: fix ECMP route replacement
    - LP: #1471252
  * tcp/ipv6: fix flow label setting in TIME_WAIT state
    - LP: #1471252
  * staging: vt6655: move setting of PSTxDesc->buff_addr to vnt_tx_packet
    - LP: #1471252
  * staging: vt6655: Fix TD_FLAGS_NETIF_SKB only on TYPE_AC0DMA
    - LP: #1471252
  * staging: vt6655: vnt_tx_packet fix dma_idx selection.
    - LP: #1471252
  * staging: vt6655: vnt_tx_packet Correct TX order of OWNED_BY_NIC
    - LP: #1471252
  * staging: vt6655: [BUG] Protect MACvSelectPage1 with lock.
    - LP: #1471252
  * net: core: Correct an over-stringent device loop detection.
    - LP: #1471252
  * x86: bpf_jit: fix compilation of large bpf programs
    - LP: #1471252
  * net: dp83640: fix broken calibration routine.
    - LP: #1471252
  * net: dp83640: reinforce locking rules.
    - LP: #1471252
  * net: dp83640: fix improper double spin locking.
    - LP: #1471252
  * unix/caif: sk_socket can disappear when state is unlocked
    - LP: #1471252
  * xen/netback: Properly initialize credit_bytes
    - LP: #1471252
  * net_sched: invoke ->attach() after setting dev->qdisc
    - LP: #1471252
  * sctp: Fix mangled IPv4 addresses on a IPv6 listening socket
    - LP: #1471252
  * bridge: fix br_multicast_query_expired() bug
    - LP: #1471252
  * udp: fix behavior of wrong checksums
    - LP: #1471252
  * xen: netback: read hotplug script once at start of day.
    - LP: #1471252
  * ipv4/udp: Verify multicast group is ours in upd_v4_early_demux()
    - LP: #1471252
  * bridge: disable softirqs around br_fdb_update to avoid lockup
    - LP: #1471252
  * tcp: fix child sockets to use system default congestion control if not
    set
    - LP: #1471252
  * be2net: Replace dma/pci_alloc_coherent() calls with
    dma_zalloc_coherent()
    - LP: #1471252
  * drm/radeon: partially revert "fix VM_CONTEXT*_PAGE_TABLE_END_ADDR
    handling"
    - LP: #1471252
  * Linux 3.19.8-ckt2
    - LP: #1471252

 -- Luis Henriques <luis.henriques@xxxxxxxxxxxxx>  Tue, 07 Jul 2015
18:15:10 +0100

** Changed in: linux (Ubuntu Vivid)
       Status: Fix Committed => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu.
https://bugs.launchpad.net/bugs/1454687

Title:
  add NX 842 hw compression patches

Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in linux package in Ubuntu:
  In Progress
Status in initramfs-tools source package in Vivid:
  In Progress
Status in linux source package in Vivid:
  Fix Released

Bug description:
  [Impact]
  Users of PowerPC processors with an NX coprocessor will not be able to use features like memory compression without this set of patches.

  [Test Case]
  Run kernel on a PowerPC processor with an NX coprocessor implementing 842 memory compression.

  [Fix]

  Commits:
  b130e7c04f1130f241eddf72098a6e08d41d08fe
  edc424f8cd84bbae530d8a9f86caf1923606fb24
  2da572c959dd5815aef153cf62010b16a498a0d3
  2062c5b6da758ca2bb64b698d7f9c5c45a06fcf9
  fdd05e4b9ae22603ed09beb4e179ae7746555a81
  7011a122383e36dab594406720fa1d089e0be8f9
  959e6659b6f74ec1fa4d391a3b88d63dc0189f36
  99182a42b7ef3d5e4180992ce01befd9e87526d2
  b8e04187c90107c58d1ccbeb68a0ba4c5bfd4167
  ed70b479c2c0b6e1319f0cb2de19f1051be219a4
  f7ead7b47a758bbee6fdc66f95f27fdb866e5e9d
  ca7fc7e962fa067ba31f76a6e5828537394f6481
  9358eac06b8fcf9fcaf566ec825fc05e2b1acd10
  3e648cbeb31be5cb84b9ec19822e2b85417f07c4
  3154de71258a32040214fda174e67b975b0810ef
  32be6d3e362b896c81aae7c635d44e5a91406ce2
  2c6f6eabc0bfcea0a62370038da713e3873cff31
  c47d63020c03659e584673f78f24f2e5de3e6b9b

  Plus the following configuration changes:

  +CONFIG_842_COMPRESS=m
  +CONFIG_842_DECOMPRESS=m
  +CONFIG_CRYPTO_DEV_NX_COMPRESS_CRYPTO=m
  +CONFIG_CRYPTO_DEV_NX_COMPRESS_POWERNV=m
  +CONFIG_CRYPTO_DEV_NX_COMPRESS_PSERIES=m

  In addition some modules need to be loaded by initramfs which requires
  changes to the initramfs-tools package.

  The modules are:
  nx-compress
  nx-compress-crypto
  nx-compress-platform
  nx-compress-pseries
  nx-compress-powernv
  842-decompress

  --

  Please add/include the patches for PowerPC NX coprocessor 842 memory
  compression.  They're currently in Herbert Xu's upstream tree, and
  presumably he will send them up to Linus at the 4.2 merge window.

  You can find the commits at
  git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git

  ed70b47 crypto: nx - add hardware 842 crypto comp alg
  b8e04187 crypto: nx - simplify pSeries nx842 driver
  99182a42 crypto: nx - add PowerNV platform NX-842 driver
  959e665 crypto: nx - add nx842 constraints
  7011a12 crypto: nx - add NX-842 platform frontend driver
  fdd05e4 crypto: nx - rename nx-842.c to nx-842-pseries.c
  2062c5b crypto: 842 - change 842 alg to use software
  2da572c lib: add software 842 compression/decompression
  edc424f powerpc: Add ICSWX instruction
  b130e7c powerpc: export of_get_ibm_chip_id function

  I'll update this when they are added to Linus' tree.

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