Merge 3.18.55 into android-3.18

Changes in 3.18.55
	USB: ene_usb6250: fix DMA to the stack
	watchdog: pcwd_usb: fix NULL-deref at probe
	char: lp: fix possible integer overflow in lp_setup()
	USB: core: replace %p with %pK
	dm btree: fix for dm_btree_find_lowest_key()
	dm bufio: avoid a possible ABBA deadlock
	dm thin metadata: call precommit before saving the roots
	dm space map disk: fix some book keeping in the disk space map
	mwifiex: pcie: fix cmd_buf use-after-free in remove/reset
	ima: accept previously set IMA_NEW_FILE
	regulator: tps65023: Fix inverted core enable logic.
	ath9k_htc: fix NULL-deref at probe
	cdc-acm: fix possible invalid access when processing notification
	of: fix sparse warning in of_pci_range_parser_one
	of: fdt: add missing allocation-failure check
	iio: dac: ad7303: fix channel description
	pid_ns: Sleep in TASK_INTERRUPTIBLE in zap_pid_ns_processes
	USB: serial: ftdi_sio: fix setting latency for unprivileged users
	USB: serial: ftdi_sio: add Olimex ARM-USB-TINY(H) PIDs
	usb: host: xhci-plat: propagate return value of platform_get_irq()
	usb: host: xhci-mem: allocate zeroed Scratchpad Buffer
	net: irda: irda-usb: fix firmware name on big-endian hosts
	usbvision: fix NULL-deref at probe
	mceusb: fix NULL-deref at probe
	ttusb2: limit messages to buffer size
	usb: musb: tusb6010_omap: Do not reset the other direction's packet size
	USB: iowarrior: fix info ioctl on big-endian hosts
	usb: serial: option: add Telit ME910 support
	USB: serial: qcserial: add more Lenovo EM74xx device IDs
	USB: serial: mct_u232: fix big-endian baud-rate handling
	USB: serial: io_ti: fix div-by-zero in set_termios
	USB: hub: fix SS hub-descriptor handling
	USB: hub: fix non-SS hub-descriptor handling
	tty: Prevent ldisc drivers from re-using stale tty fields
	ipx: call ipxitf_put() in ioctl error path
	iio: proximity: as3935: fix as3935_write
	gspca: konica: add missing endpoint sanity check
	s5p-mfc: Fix unbalanced call to clock management
	dib0700: fix NULL-deref at probe
	zr364xx: enforce minimum size when reading header
	cx231xx-cards: fix NULL-deref at probe
	cx231xx-audio: fix NULL-deref at probe
	powerpc/pseries: Fix of_node_put() underflow during DLPAR remove
	ARM: dts: at91: sama5d3_xplained: fix ADC vref
	ARM: dts: at91: sama5d3_xplained: not all ADC channels are available
	arm64: uaccess: ensure extension of access_ok() addr
	arm64: documentation: document tagged pointer stack constraints
	xc2028: Fix use-after-free bug properly
	mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp
	metag/uaccess: Fix access_ok()
	metag/uaccess: Check access_ok in strncpy_from_user
	stackprotector: Increase the per-task stack canary's random range from 32 bits to 64 bits on 64-bit platforms
	uwb: fix device quirk on big-endian hosts
	osf_wait4(): fix infoleak
	tracing/kprobes: Enforce kprobes teardown after testing
	PCI: Fix pci_mmap_fits() for HAVE_PCI_RESOURCE_TO_USER platforms
	PCI: Freeze PME scan before suspending devices
	drivers: char: mem: Check for address space wraparound with mmap()
	usb: misc: legousbtower: Fix memory leak
	Linux 3.18.55

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