Merge 3.18.53 into android-3.18

Changes in 3.18.53
	9p: fix a potential acl leak
	tty: remove platform_sysrq_reset_seq
	mtd: cfi: reduce stack size
	cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores
	powerpc/powernv: Fix opal_exit tracepoint opcode
	power: supply: bq24190_charger: Fix irq trigger to IRQF_TRIGGER_FALLING
	power: supply: bq24190_charger: Call set_mode_host() on pm_resume()
	mwifiex: debugfs: Fix (sometimes) off-by-1 SSID print
	mwifiex: Avoid skipping WEP key deletion for AP
	x86/pci-calgary: Fix iommu_free() comparison of unsigned expression >= 0
	kprobes/x86: Fix kernel panic when certain exception-handling addresses are probed
	x86/platform/intel-mid: Correct MSI IRQ line for watchdog device
	Revert "KVM: nested VMX: disable perf cpuid reporting"
	usb: host: ehci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths
	usb: host: ohci-exynos: Decrese node refcount on exynos_ehci_get_phy() error paths
	USB: serial: keyspan_pda: fix receive sanity checks
	USB: serial: digi_acceleport: fix incomplete rx sanity check
	USB: serial: ssu100: fix control-message error handling
	USB: serial: io_edgeport: fix epic-descriptor handling
	USB: serial: ti_usb_3410_5052: fix control-message error handling
	USB: serial: ark3116: fix open error handling
	USB: serial: ftdi_sio: fix latency-timer error handling
	USB: serial: quatech2: fix control-message error handling
	USB: serial: mct_u232: fix modem-status error handling
	USB: serial: io_edgeport: fix descriptor error handling
	brcmfmac: Ensure pointer correctly set if skb data location changes
	brcmfmac: Make skb header writable before use
	staging: emxx_udc: remove incorrect __init annotations
	tcp: do not underestimate skb->truesize in tcp_trim_head()
	ipv4, ipv6: ensure raw socket message is big enough to hold an IP header
	ipv6: initialize route null entry in addrconf_init()
	ipv6: reorder ip6_route_dev_notifier after ipv6_dev_notf
	tcp: fix wraparound issue in tcp_lp
	f2fs: sanity check segment count
	drm/ttm: fix use-after-free races in vm fault handling
	ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode
	Linux 3.18.53

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