Merge 4.9.260 into android-4.9-q

Changes in 4.9.260
	futex: Cleanup variable names for futex_top_waiter()
	futex: Cleanup refcounting
	futex: Pull rt_mutex_futex_unlock() out from under hb->lock
	futex: Futex_unlock_pi() determinism
	futex: Fix pi_state->owner serialization
	futex: Fix more put_pi_state() vs. exit_pi_state_list() races
	futex: Don't enable IRQs unconditionally in put_pi_state()
	net: usb: qmi_wwan: support ZTE P685M modem
	arm: kprobes: Allow to handle reentered kprobe on single-stepping
	scripts: use pkg-config to locate libcrypto
	scripts: set proper OpenSSL include dir also for sign-file
	hugetlb: fix update_and_free_page contig page struct assumption
	printk: fix deadlock when kernel panic
	arm64: Remove redundant mov from LL/SC cmpxchg
	arm64: Avoid redundant type conversions in xchg() and cmpxchg()
	arm64: cmpxchg: Use "K" instead of "L" for ll/sc immediate constraint
	arm64: Use correct ll/sc atomic constraints
	JFS: more checks for invalid superblock
	xfs: Fix assert failure in xfs_setattr_size()
	smackfs: restrict bytes count in smackfs write functions
	net: fix up truesize of cloned skb in skb_prepare_for_shift()
	mm/hugetlb.c: fix unnecessary address expansion of pmd sharing
	staging: fwserial: Fix error handling in fwserial_create
	x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk
	vt/consolemap: do font sum unsigned
	wlcore: Fix command execute failure 19 for wl12xx
	pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()
	ath10k: fix wmi mgmt tx queue full due to race condition
	x86/build: Treat R_386_PLT32 relocation as R_386_PC32
	Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data
	staging: most: sound: add sanity check for function argument
	media: uvcvideo: Allow entities with no pads
	scsi: iscsi: Restrict sessions and handles to admin capabilities
	sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
	scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE
	scsi: iscsi: Verify lengths on passthrough PDUs
	Xen/gnttab: handle p2m update errors on a per-slot basis
	xen-netback: respect gnttab_map_refs()'s return value
	zsmalloc: account the number of compacted pages correctly
	swap: fix swapfile read/write offset
	media: v4l: ioctl: Fix memory leak in video_usercopy
	Linux 4.9.260

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I36c2dd54eec10fff4b30d04830dbf0c3928ec088