Merge 4.4.99 into android-4.4

Merge 4.4.99 into android-4.4

Changes in 4.4.99
	mac80211: accept key reinstall without changing anything
	mac80211: use constant time comparison with keys
	mac80211: don't compare TKIP TX MIC key in reinstall prevention
	usb: usbtest: fix NULL pointer dereference
	Input: ims-psu - check if CDC union descriptor is sane
	ALSA: seq: Cancel pending autoload work at unbinding device
	tun/tap: sanitize TUNSETSNDBUF input
	tcp: fix tcp_mtu_probe() vs highest_sack
	l2tp: check ps->sock before running pppol2tp_session_ioctl()
	tun: call dev_get_valid_name() before register_netdevice()
	sctp: add the missing sock_owned_by_user check in sctp_icmp_redirect
	packet: avoid panic in packet_getsockopt()
	ipv6: flowlabel: do not leave opt->tot_len with garbage
	net/unix: don't show information about sockets from other namespaces
	ip6_gre: only increase err_count for some certain type icmpv6 in ip6gre_err
	tun: allow positive return values on dev_get_valid_name() call
	sctp: reset owner sk for data chunks on out queues when migrating a sock
	ppp: fix race in ppp device destruction
	ipip: only increase err_count for some certain type icmp in ipip_err
	tcp/dccp: fix ireq->opt races
	tcp/dccp: fix lockdep splat in inet_csk_route_req()
	tcp/dccp: fix other lockdep splats accessing ireq_opt
	security/keys: add CONFIG_KEYS_COMPAT to Kconfig
	tipc: fix link attribute propagation bug
	brcmfmac: remove setting IBSS mode when stopping AP
	target/iscsi: Fix iSCSI task reassignment handling
	target: Fix node_acl demo-mode + uncached dynamic shutdown regression
	misc: panel: properly restore atomic counter on error path
	Linux 4.4.99

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