Merge 4.9.157 into android-4.9

Merge 4.9.157 into android-4.9

Changes in 4.9.157
	mtd: rawnand: gpmi: fix MX28 bus master lockup problem
	iio: chemical: atlas-ph-sensor: correct IIO_TEMP values to millicelsius
	signal: Always notice exiting tasks
	signal: Better detection of synchronous signals
	misc: vexpress: Off by one in vexpress_syscfg_exec()
	samples: mei: use /dev/mei0 instead of /dev/mei
	debugfs: fix debugfs_rename parameter checking
	mips: cm: reprime error cause
	MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
	MIPS: VDSO: Include $(ccflags-vdso) in o32,n32 .lds builds
	ARM: iop32x/n2100: fix PCI IRQ mapping
	ARM: tango: Improve ARCH_MULTIPLATFORM compatibility
	mac80211: ensure that mgmt tx skbs have tailroom for encryption
	drm/modes: Prevent division by zero htotal
	drm/vmwgfx: Fix setting of dma masks
	drm/vmwgfx: Return error code from vmw_execbuf_copy_fence_user
	nfsd4: fix cached replies to solo SEQUENCE compounds
	nfsd4: catch some false session retries
	HID: debug: fix the ring buffer implementation
	Revert "cifs: In Kconfig CONFIG_CIFS_POSIX needs depends on legacy (insecure cifs)"
	libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive()
	xfrm: refine validation of template and selector families
	batman-adv: Avoid WARN on net_device without parent in netns
	batman-adv: Force mac header to start of data on xmit
	Linux 4.9.157

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>