Utopic update to 3.16.7-ckt7 stable release

SRU Justification

    Impact:
       The upstream process for stable tree updates is quite similar
       in scope to the Ubuntu SRU process, e.g., each patch has to
       demonstrably fix a bug, and each patch is vetted by upstream
       by originating either directly from Linus' tree or in a minimally
       backported form of that patch. The 3.16.7-ckt7 upstream stable
       patch set is now available. It should be included in the Ubuntu
       kernel as well.

       git://git.kernel.org/

    TEST CASE: TBD

       The following patches are in the 3.16.7-ckt7 stable release:

powerpc: add little endian flag to syscall_get_arch()
arm64: Fix up /proc/cpuinfo
MIPS: IRQ: Fix disable_irq on CPU IRQs
Complete oplock break jobs before closing file handle
smpboot: Add missing get_online_cpus() in smpboot_register_percpu_thread()
ASoC: atmel_ssc_dai: fix start event for I2S mode
spi: spi-fsl-dspi: Remove usage of devm_kzalloc
ALSA: ak411x: Fix stall in work callback
lib/checksum.c: fix carry in csum_tcpudp_nofold
lib/checksum.c: fix build for generic csum_tcpudp_nofold
MIPS: Fix kernel lockup or crash after CPU offline/online
gpio: sysfs: fix memory leak in gpiod_export_link
gpio: sysfs: fix memory leak in gpiod_sysfs_set_active_low
md/raid5: fix another livelock caused by non-aligned writes.
PCI: Add NEC variants to Stratus ftServer PCIe DMI check
drm/radeon: fix PLLs on RS880 and older v2
drm/radeon: don't init gpuvm if accel is disabled (v3)
drm/radeon: properly set vm fragment size for TN/RL
ARM: 8299/1: mm: ensure local active ASID is marked as allocated on rollover
ASoC: sgtl5000: add delay before first I2C access
PCI: Handle read-only BARs on AMD CS553x devices
ARM: dts: Fix I2S1, I2S2 compatible for exynos4 SoCs
mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range
nilfs2: fix deadlock of segment constructor over I_SYNC flag
ip: zero sockaddr returned on error queue
net: rps: fix cpu unplug
ipv6: stop sending PTB packets for MTU < 1280
netxen: fix netxen_nic_poll() logic
udp_diag: Fix socket skipping within chain
ping: Fix race in free in receive path
ipv6: replacing a rt6_info needs to purge possible propagated rt6_infos too
bnx2x: fix napi poll return value for repoll
net: don't OOPS on socket aio
bridge: dont send notification when skb->len == 0 in rtnl_bridge_notify
tcp: ipv4: initialize unicast_sock sk_pacing_rate
ipv4: tcp: get rid of ugly unicast_sock
ppp: deflate: never return len larger than output buffer
net: sctp: fix passing wrong parameter header to param_type2af in sctp_process_param
hyperv: Fix the error processing in netvsc_send()
x86: mm: move mmap_sem unlock from mm_fault_error() to caller
ALSA: hda - Add mute LED pin quirk for HP 15 touchsmart
ALSA: hda/realtek - move HP_MUTE_LED_MIC1 quirk for alc282
KVM: x86: update masterclock values on TSC writes
[media] media/rc: Send sync space information on the lirc device
mmc: sdhci: Add PCI IDs for Intel Braswell
mmc: sdhci-pci: Fix Braswell eMMC timeout clock frequency
mmc: sdhci-pci: Add support for Intel SPT
mmc: sdhci-acpi: Add ACPI HID INT344D
mmc: sdhci: Preset value not supported in Baytrail eMMC
mmc: sdhci-acpi: Add a HID and UID for a SD Card host controller
ceph: introduce global empty snap context
drm/vmwgfx: Don't use memory accounting for kernel-side fence objects
Bluetooth: Add USB device 04ca:3010 as Atheros AR3012
Bluetooth: Add support for Acer [0489:e078]
virtio_pci: defer kfree until release callback
virtio_pci: document why we defer kfree
Linux 3.16.7-ckt7

The following patches were already applied to Utopic kernel:

Bluetooth: ath3k: workaround the compatibility issue with xHCI controller
net:socket: set msg_namelen to 0 if msg_name is passed as NULL in msghdr struct from userland.