Merge 3.18.86 into android-3.18

Changes in 3.18.86
	netlink: add a start callback for starting a netlink dump
	ipsec: Fix aborted xfrm policy dump crash
	mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()
	mm/madvise.c: fix madvise() infinite loop under special circumstances
	btrfs: clear space cache inode generation always
	KVM: x86: Exit to user-mode on #UD intercept when emulator requires
	KVM: x86: inject exceptions produced by x86_decode_insn
	eeprom: at24: check at24_read/write arguments
	drm/panel: simple: Add missing panel_simple_unprepare() calls
	NFS: revalidate "." etc correctly on "open".
	drm/i915: Don't try indexed reads to alternate slave addresses
	drm/i915: Prevent zero length "index" write
	Linux 3.18.86

Change-Id: I82ae1a739684c8aba9fe1864d4632cb0a25e26e5
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>