Merge 4.4.87 into android-4.4

Changes in 4.4.87
	irqchip: mips-gic: SYNC after enabling GIC region
	i2c: ismt: Don't duplicate the receive length for block reads
	i2c: ismt: Return EMSGSIZE for block reads with bogus length
	ceph: fix readpage from fscache
	cpumask: fix spurious cpumask_of_node() on non-NUMA multi-node configs
	cpuset: Fix incorrect memory_pressure control file mapping
	alpha: uapi: Add support for __SANE_USERSPACE_TYPES__
	CIFS: Fix maximum SMB2 header size
	CIFS: remove endian related sparse warning
	wl1251: add a missing spin_lock_init()
	xfrm: policy: check policy direction value
	drm/ttm: Fix accounting error when fail to get pages for pool
	kvm: arm/arm64: Fix race in resetting stage2 PGD
	kvm: arm/arm64: Force reading uncached stage2 PGD
	epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove()
	crypto: algif_skcipher - only call put_page on referenced and used pages
	Linux 4.4.87

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

diff --cc Makefile
Simple merge

diff --cc fs/eventpoll.c
Simple merge

diff --cc kernel/cpuset.c
Simple merge