Merge 4.9.219 into android-4.9-q

Changes in 4.9.219
	l2tp: ensure sessions are freed after their PPPOL2TP socket
	l2tp: fix race between l2tp_session_delete() and l2tp_tunnel_closeall()
	drm/bochs: downgrade pci_request_region failure from error to warning
	ipv4: fix a RCU-list lock in fib_triestat_seq_show
	net, ip_tunnel: fix interface lookup with no key
	sctp: fix refcount bug in sctp_wfree
	sctp: fix possibly using a bad saddr with a given dst
	drm/etnaviv: replace MMU flush marker with flush sequence
	blk-mq: sync the update nr_hw_queues with blk_mq_queue_tag_busy_iter
	blk-mq: Allow blocking queue tag iter callbacks
	coresight: do not use the BIT() macro in the UAPI header
	net: dsa: tag_brcm: Fix skb->fwd_offload_mark location
	padata: always acquire cpu_hotplug_lock before pinst->lock
	mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
	net: dsa: bcm_sf2: Ensure correct sub-node is parsed
	net: stmmac: dwmac1000: fix out-of-bounds mac address reg setting
	slcan: Don't transmit uninitialized stack data in padding
	net: phy: micrel: kszphy_resume(): add delay after genphy_resume() before accessing PHY registers
	random: always use batched entropy for get_random_u{32,64}
	tools/accounting/getdelays.c: fix netlink attribute length
	ASoC: jz4740-i2s: Fix divider written at incorrect offset in register
	IB/hfi1: Call kobject_put() when kobject_init_and_add() fails
	IB/hfi1: Fix memory leaks in sysfs registration and unregistration
	ceph: remove the extra slashes in the server path
	ceph: canonicalize server path in place
	Bluetooth: RFCOMM: fix ODEBUG bug in rfcomm_dev_ioctl
	RDMA/cm: Update num_paths in cma_resolve_iboe_route error flow
	clk: qcom: rcg: Return failure for RCG update
	drm/msm: stop abusing dma_map/unmap for cache
	arm64: Fix size of __early_cpu_boot_status
	usb: dwc3: don't set gadget->is_otg flag
	drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read()
	drm/msm: Use the correct dma_sync calls in msm_gem
	Linux 4.9.219

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic787d6aa9374864ce928ac1ef802077ac55ca232