Merge 4.19.148 into android-4.19-stable

Changes in 4.19.148
	af_key: pfkey_dump needs parameter validation
	KVM: fix memory leak in kvm_io_bus_unregister_dev()
	kprobes: fix kill kprobe which has been marked as gone
	mm/thp: fix __split_huge_pmd_locked() for migration PMD
	cxgb4: Fix offset when clearing filter byte counters
	geneve: add transport ports in route lookup for geneve
	hdlc_ppp: add range checks in ppp_cp_parse_cr()
	ip: fix tos reflection in ack and reset packets
	ipv6: avoid lockdep issue in fib6_del()
	net: DCB: Validate DCB_ATTR_DCB_BUFFER argument
	net: dsa: rtl8366: Properly clear member config
	net: ipv6: fix kconfig dependency warning for IPV6_SEG6_HMAC
	net: sch_generic: aviod concurrent reset and enqueue op for lockless qdisc
	nfp: use correct define to return NONE fec
	tipc: Fix memory leak in tipc_group_create_member()
	tipc: fix shutdown() of connection oriented socket
	tipc: use skb_unshare() instead in tipc_buf_append()
	bnxt_en: return proper error codes in bnxt_show_temp
	bnxt_en: Protect bnxt_set_eee() and bnxt_set_pauseparam() with mutex.
	net: phy: Avoid NPD upon phy_detach() when driver is unbound
	net: qrtr: check skb_put_padto() return value
	net: add __must_check to skb_put_padto()
	ipv4: Update exception handling for multipath routes via same device
	MAINTAINERS: add CLANG/LLVM BUILD SUPPORT info
	kbuild: add OBJSIZE variable for the size tool
	Documentation/llvm: add documentation on building w/ Clang/LLVM
	Documentation/llvm: fix the name of llvm-size
	net: wan: wanxl: use allow to pass CROSS_COMPILE_M68k for rebuilding firmware
	net: wan: wanxl: use $(M68KCC) instead of $(M68KAS) for rebuilding firmware
	x86/boot: kbuild: allow readelf executable to be specified
	kbuild: remove AS variable
	kbuild: replace AS=clang with LLVM_IAS=1
	kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
	mm: memcg: fix memcg reclaim soft lockup
	tcp_bbr: refactor bbr_target_cwnd() for general inflight provisioning
	tcp_bbr: adapt cwnd based on ack aggregation estimation
	serial: 8250: Avoid error message on reprobe
	Linux 4.19.148

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5077093f58ae882547e3b23c5bbd4dfe78116071