Enable CONFIG_VIRT_CPU_ACCOUNTING_NATIVE for ppc64el

Sent patch to Ubuntu kernel-team ML.

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-utopic' to 'verification-done-utopic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

$ grep CONFIG_VIRT_CPU /boot/config-3.16.0-39-generic
CONFIG_VIRT_CPU_ACCOUNTING=y
CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set

I created two VMs and watched top in each VM and observed a steal%.

Verified for Utopic.

This bug was fixed in the package linux - 3.16.0-39.53

---------------
linux (3.16.0-39.53) utopic; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
    - LP: #1458778

  [ Brad Figg ]

  * hyper-v -- add hid and fb drivers to linux-virtual
    - LP: #1444179

  [ Chris J Arges ]

  * [Config] CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y on ppc64el
    - LP: #1450497

  [ Luis Henriques ]

  * SAUCE: (no-up) trace: fix trace_open_exec() invocation
    - LP: #1453848

  [ Paolo Pisati ]

  * [Config] armhf: GENERIC_CPUFREQ_CPU0=y
    - LP: #1457781

  [ Upstream Kernel Changes ]

  * DT doc: net: cpsw mac-address is optional
    - LP: #1452628
  * net: cpsw: Add missing return value
    - LP: #1452628
  * net: cpsw: header, Add missing include
    - LP: #1452628
  * net: cpsw: Replace pr_err by dev_err
    - LP: #1452628
  * net: cpsw: Add am33xx MACID readout
    - LP: #1452628
  * am33xx: define syscon control module device node
    - LP: #1452628
  * arm: dts: am33xx, Add syscon phandle to cpsw node
    - LP: #1452628
  * x86: kvm: Revert "remove sched notifier for cross-cpu migrations"
    - LP: #1450584
  * x86: vdso: fix pvclock races with task migration
    - LP: #1450584
  * n_tty: Fix read buffer overwrite when no newline
    - LP: #1454202
  * spi: spidev: fix possible arithmetic overflow for multi-transfer
    message
    - LP: #1454202
  * arm64: vdso: fix build error when switching from LE to BE
    - LP: #1454202
  * uas: Do not blacklist ASM1153 disk enclosures
    - LP: #1454202
  * KVM: x86: Fix lost interrupt on irr_pending race
    - LP: #1454202
  * tcp: prevent fetching dst twice in early demux code
    - LP: #1454202
  * ipv6: protect skb->sk accesses from recursive dereference inside the
    stack
    - LP: #1454202
  * tcp: tcp_make_synack() should clear skb->tstamp
    - LP: #1454202
  * usbnet: Fix tx_packets stat for FLAG_MULTI_FRAME drivers
    - LP: #1454202
  * usbnet: Fix tx_bytes statistic running backward in cdc_ncm
    - LP: #1454202
  * bonding: Bonding Overriding Configuration logic restored.
    - LP: #1454202
  * HID: add ALWAYS_POLL quirk for a Logitech 0xc007
    - LP: #1454202
  * PCI/AER: Avoid info leak in __print_tlp_header()
    - LP: #1454202
  * PCI: cpcihp: Add missing curly braces in cpci_configure_slot()
    - LP: #1454202
  * sh_veu: v4l2_dev wasn't set
    - LP: #1454202
  * media: s5p-mfc: fix mmap support for 64bit arch
    - LP: #1454202
  * cpufreq: Schedule work for the first-online CPU on resume
    - LP: #1454202
  * cpuidle: remove state_count field from struct cpuidle_device
    - LP: #1454202
  * cpuidle: ACPI: do not overwrite name and description of C0
    - LP: #1454202
  * ioctx_alloc(): fix vma (and file) leak on failure
    - LP: #1454202
  * drm/i915/vlv: save/restore the power context base reg
    - LP: #1454202
  * drm/i915/chv: Remove Wait for a previous gfx force-off
    - LP: #1454202
  * drm/i915/vlv: remove wait for previous GFX clk disable request
    - LP: #1454202
  * ALSA: hda/realtek - Make more stable to get pin sense for ALC283
    - LP: #1454202
  * ALSA: bebob: fix to processing in big-endian machine for sending cue
    - LP: #1454202
  * be2iscsi: Fix kern...