Merge 3.18.99 into android-3.18

Changes in 3.18.99
	tpm_i2c_infineon: fix potential buffer overruns caused by bit glitches on the bus
	tpm_i2c_nuvoton: fix potential buffer overruns caused by bit glitches on the bus
	ALSA: usb-audio: Add a quirck for B&W PX headphones
	cpufreq: s3c24xx: Fix broken s3c_cpufreq_init()
	ARM: mvebu: Fix broken PL310_ERRATA_753970 selects
	net: fec: introduce fec_ptp_stop and use in probe fail path
	leds: do not overflow sysfs buffer in led_trigger_show
	bridge: check brport attr show in brport_show
	hdlc_ppp: carrier detect ok, don't turn off negotiation
	ipv6 sit: work around bogus gcc-8 -Wrestrict warning
	net: fix race on decreasing number of TX queues
	netlink: ensure to loop over all netns in genlmsg_multicast_allns()
	ppp: prevent unregistered channels from connecting to PPP units
	udplite: fix partial checksum initialization
	sctp: fix dst refcnt leak in sctp_v6_get_dst()
	s390/qeth: fix SETIP command handling
	s390/qeth: fix IPA command submission race
	sctp: verify size of a new chunk in _sctp_make_chunk()
	net: ipv4: don't allow setting net.ipv4.route.min_pmtu below 68
	fib_semantics: Don't match route with mismatching tclassid
	dm io: fix duplicate bio completion due to missing ref count
	Linux 3.18.99

Change-Id: I4ab9fb6e2ba39def508fd0d3de055adf4ae81c95
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>