Precise update to 3.2.74 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 3.2.74 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 3.2.74 stable release:

PCI: Fix devfn for VPD access through function 0
PCI: Use function 0 VPD for identical functions, regular VPD for others
mac80211: fix driver RSSI event calculations
HID: core: Avoid uninitialized buffer access
wm831x_power: Use IRQF_ONESHOT to request threaded IRQs
mwifiex: fix mwifiex_rdeeprom_read()
mtd: mtdpart: fix add_mtd_partitions error path
devres: fix a for loop bounds check
packet: fix match_fanout_group()
Btrfs: added helper btrfs_next_item()
Btrfs: fix file corruption and data loss after cloning inline extents
iommu/vt-d: Fix ATSR handling for Root-Complex integrated endpoints
ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode
Btrfs: don't use ram_bytes for uncompressed inline items
Btrfs: fix truncation of compressed and inlined extents
ext4, jbd2: ensure entering into panic after recording an error in superblock
Bluetooth: ath3k: Add new AR3012 0930:021c id
Bluetooth: ath3k: Add support of AR3012 0cf3:817b device
staging: rtl8712: Add device ID for Sitecom WLA2100
ACPI: Use correct IRQ when uninstalling ACPI interrupt handler
MIPS: atomic: Fix comment describing atomic64_add_unless's return value.
ALSA: hda - Disable 64bit address for Creative HDA controllers
megaraid_sas: Do not use PAGE_SIZE for max_sectors
can: Use correct type in sizeof() in nla_put()
mtd: blkdevs: fix potential deadlock + lockdep warnings
crypto: algif_hash - Only export and import on sockets with data
megaraid_sas : SMAP restriction--do not access user memory from IOCTL code
recordmcount: Fix endianness handling bug for nop_mcount
ipv6: fix tunnel error handling
ALSA: hda - Apply pin fixup for HP ProBook 6550b
firewire: ohci: fix JMicron JMB38x IT context discovery
scsi: restart list search after unlock in scsi_remove_target
x86/cpu: Call verify_cpu() after having entered long mode too
Btrfs: fix race leading to incorrect item deletion when dropping extents
Btrfs: fix race leading to BUG_ON when running delalloc for nodatacow
perf: Fix inherited events vs. tracepoint filters
scsi_sysfs: Fix queue_ramp_up_period return code
Btrfs: fix race when listing an inode's xattrs
net: fix a race in dst_release()
FS-Cache: Increase reference of parent after registering, netfs success
FS-Cache: Don't override netfs's primary_index if registering failed
FS-Cache: Handle a write to the page immediately beyond the EOF marker
binfmt_elf: Don't clobber passed executable's file header
fs: make dumpable=2 require fully qualified path
fs: if a coredump already exists, unlink and recreate with O_EXCL
irda: precedence bug in irlmp_seq_hb_idx()
RDS-TCP: Recover correctly from pskb_pull()/pksb_trim() failure in rds_tcp_data_recv
ipmr: fix possible race resulting from improper usage of IP_INC_STATS_BH() in preemptible context.
net: avoid NULL deref in inet_ctl_sock_destroy()
splice: sendfile() at once fails for big files
Linux 3.2.74

The following patch from 3.2.74 was already applied to the Precise kernel:

KVM: svm: unconditionally intercept #DB