Trusty update to 3.13.11-ckt25 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 3.13.11-ckt25 upstream stable
       patch set is now available. It should be included in the Ubuntu
       kernel as well.

       git://kernel.ubuntu.com/ubuntu/linux.git

    TEST CASE: TBD

       The following patches are in the 3.13.11-ckt25 stable release:
            Linux 3.13.11-ckt25
            ipv6: Make MLD packets to only be processed locally
            rds: rds_ib_device.refcount overflow
            net: dsa: Test array index before use
            net: dsa: Fix off-by-one in switch address parsing
            net: graceful exit from netif_alloc_netdev_queues()
            net: do not process device backlog during unregistration
            bridge: mdb: zero out the local br_ip variable before use
            bridge: mdb: start delete timer for temp static entries
            ip_tunnel: fix ipv4 pmtu check to honor inner ip header df
            genirq: Prevent resend to interrupts marked IRQ_NESTED_THREAD
            drm/radeon: Don't flush the GART TLB if rdev->gart.ptr == NULL
            drm/radeon: add a dpm quirk for Sapphire Radeon R9 270X 2GB GDDR5
            st: null pointer dereference panic caused by use after kref_put by st_open
            s390/process: fix sfpc inline assembly
            ARC: make sure instruction_pointer() returns unsigned value
            Btrfs: fix memory leak in the extent_same ioctl
            USB: serial: Destroy serial_minors IDR on module exit
            drivers: net: cpsw: fix crash while accessing second slave ethernet interface
            tracing: Have branch tracer use recursive field of task struct
            ARM: dts: mx23: fix iio-hwmon support
            drm: add a check for x/y in drm_mode_setcrtc
            s390/sclp: clear upper register halves in _sclp_print_early
            usb: musb: host: rely on port_mode to call musb_start()
            dm btree: silence lockdep lock inversion in dm_btree_del()
            USB: cp210x: add ID for Aruba Networks controllers
            USB: option: add 2020:4000 ID
            dm btree remove: fix bug in redistribute3
            iio: tmp006: Check channel info on write
            ALSA: usb-audio: Add MIDI support for Steinberg MI2/MI4
            iio: adc: at91_adc: allow to use full range of startup time
            iio: DAC: ad5624r_spi: fix bit shift of output data value
            iio: inv-mpu: Specify the expected format/precision for write channels
            freeing unlinked file indefinitely delayed
            9p: don't leave a half-initialized inode sitting around
            hpfs: kstrdup() out of memory handling
            ACPI / PNP: Reserve ACPI resources at the fs_initcall_sync stage
            ext4: replace open coded nofail allocation in ext4_free_blocks()
            ext4: correctly migrate a file with a hole at the beginning
            ext4: be more strict when migrating to non-extent based file
            ext4: fix reservation release on invalidatepage for delalloc fs
            Btrfs: fix fsync data loss after append write
            Btrfs: fix race between caching kthread and returning inode to inode cache
            Btrfs: use kmem_cache_free when freeing entry in inode cache
            sg_start_req(): make sure that there's not too many elements in iovec
            KEYS: ensure we free the assoc array edit if edit is valid