Wily update to v4.2.8-ckt6 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 a mainline/stable Linux tree or
       a minimally backported form of that patch. The v4.2.8-ckt6 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 from the v4.2.8-ckt6 stable release shall be applied:

Linux 4.2.8-ckt6
mld, igmp: Fix reserved tailroom calculation
net: moxa: fix an error code
net: qca_spi: Don't clear IFF_BROADCAST
cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind
net/mlx5e: Remove wrong poll CQ optimization
ipv6: re-enable fragment header matching in ipv6_find_hdr
net/mlx4_core: Allow resetting VF admin mac to zero
ppp: release rtnl mutex when interface creation fails
ext4: iterate over buffer heads correctly in move_extent_per_page()
tcp: convert cached rtt from usec to jiffies when feeding initial rto
be2net: Don't leak iomapped memory on removal.
tcp: fix tcpi_segs_in after connection establishment
MIPS: smp.c: Fix uninitialised temp_foreign_map
dmaengine: pxa_dma: fix cyclic transfers
IB/core: Use GRH when the path hop-limit > 0
MIPS: Fix build error when SMP is used without GIC
dmaengine: at_xdmac: fix residue computation
KVM: MMU: fix ept=0/pte.u=1/pte.w=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0 combo
tracing: Fix check for cpu online when event is disabled
arm64: account for sparsemem section alignment when choosing vmemmap offset
KVM: VMX: disable PEBS before a guest entry
jffs2: reduce the breakage on recovery from halfway failed rename()
ncpfs: fix a braino in OOM handling in ncp_fill_cache()
KVM: PPC: Book3S HV: Sanitize special-purpose register values on guest exit
PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr()
ARM: dts: dra7: do not gate cpsw clock due to errata i877
ARM: OMAP2+: hwmod: Introduce ti,no-idle dt property
target: Drop incorrect ABORT_TASK put for completed commands
ubi: Fix out of bounds write in volume update code
MIPS: traps: Fix SIGFPE information leak from `do_ov' and `do_trap_or_bp'
ovl: ignore lower entries when checking purity of non-directory entries
ovl: fix getcwd() failure after unsuccessful rmdir
ovl: fix working on distributed fs as lower layer
ALSA: hda - Fix mic issues on Acer Aspire E1-472
PM / sleep / x86: Fix crash on graph trace through x86 suspend
drm/amdgpu: return from atombios_dp_get_dpcd only when error
drm/radeon/pm: update current crtc info after setting the powerstate
drm/amdgpu/pm: update current crtc info after setting the powerstate
USB: qcserial: add Sierra Wireless EM74xx device ID
drm/ast: Fix incorrect register check for DRAM width
parisc: Fix ptrace syscall number and return value modification
ALSA: seq: oss: Don't drain at closing a client
i2c: brcmstb: allocate correct amount of memory for regmap
mac80211: Fix Public Action frame RX in AP mode
mac80211: check PN correctly for GCMP-encrypted fragmented MPDUs
ALSA: usb-audio: Add a quirk for Plantronics DA45
USB: serial: option: add support for Quectel UC20
USB: serial: option: add support for Telit LE922 PID 0x1045
ASoC: wm_adsp: Fix enum ctl accesses in a wrong type
ASoC: wm8994: Fix enum ctl accesses in a wrong type
ASoC: wm8958: Fix enum ctl accesses in a wrong type
ASoC: dapm: Fix ctl value accesses in a wrong type
USB: cp210x: Add ID for Parrot NMEA GPS Flight Recorder
USB: qcserial: add Dell Wireless 5809e Gobi 4G HSPA+ (rev3)
use ->d_seq to get coherency between ->d_inode and ->d_flags
ALSA: hdsp: Fix wrong boolean ctl value accesses
ALSA: hdspm: Fix zero-division
ALSA: hdspm: Fix wrong boolean ctl value accesses
MIPS: kvm: Fix ioctl error handling.
arm/arm64: KVM: Fix ioctl error handling
Fix cifs_uniqueid_to_ino_t() function for s390x
CIFS: Fix SMB2+ interim response processing for read requests
cifs: fix out-of-bounds access in lease parsing
ALSA: timer: Fix ioctls for X32 ABI
ALSA: timer: Fix broken compat timer user status ioctl
ALSA: rawmidi: Fix ioctls X32 ABI
ALSA: pcm: Fix ioctls for X32 ABI
ALSA: ctl: Fix ioctls for X32 ABI
vfio: fix ioctl error handling
arm64: vmemmap: use virtual projection of linear region
KVM: x86: fix root cause for missed hardware breakpoints
fbcon: set a default value to blink interval
can: gs_usb: fixed disconnect bug by removing erroneous use of kfree()
libata: Align ata_device's id on a cacheline
iommu/amd: Apply workaround for ATS write permission check
iommu/amd: Fix boot warning when device 00:00.0 is not iommu covered
Fix directory hardlinks from deleted directories
jffs2: Fix page lock / f->sem deadlock
Revert "jffs2: Fix lock acquisition order bug in jffs2_write_begin"
usb: chipidea: otg: change workqueue ci_otg as freezable
mac80211: minstrel_ht: set default tx aggregation timeout to 0
ASoC: samsung: Use IRQ safe spin lock calls
Adding Intel Lewisburg device IDs for SATA
ahci: Order SATA device IDs for codename Lewisburg
ahci: add new Intel device IDs
[media] adv7604: fix tx 5v detect regression
iwlwifi: mvm: inc pending frames counter also when txing non-sta
libata: fix HDIO_GET_32BIT ioctl
mac80211: minstrel: Change expected throughput unit back to Kbps
mac80211: fix use of uninitialised values in RX aggregation
cfg80211/wext: fix message ordering
wext: fix message delay/ordering
Input: aiptek - fix crash on detecting device without endpoints
s390/mm: four page table levels vs. fork
tipc: fix nullptr crash during subscription cancel
tipc: fix connection abort during subscription cancel