4.19-stable patches

4.19-stable patches

added patches:
	aio-simplify-and-fix-fget-fput-for-io_submit.patch
	bluetooth-fix-decrementing-reference-count-twice-in-releasing-socket.patch
	bluetooth-hci_ldisc-initialize-hci_dev-before-open.patch
	bluetooth-hci_ldisc-postpone-hci_uart_proto_ready-bit-set-in-hci_uart_set_proto.patch
	bluetooth-hci_uart-check-if-socket-buffer-is-err_ptr-in-h4_recv_buf.patch
	drm-reorder-set_property_atomic-to-avoid-returning-with-an-active-ww_ctx.patch
	f2fs-fix-to-avoid-deadlock-of-atomic-file-operations.patch
	locking-lockdep-add-debug_locks-check-in-__lock_downgrade.patch
	loop-access-lo_backing_file-only-when-the-loop-device-is-lo_bound.patch
	media-v4l2-ctrls.c-uvc-zero-v4l2_event.patch
	mm-mempolicy-fix-uninit-memory-access.patch
	netfilter-ebtables-remove-bugprint-messages.patch
	rdma-cma-rollback-source-ip-address-if-failing-to-acquire-device.patch
	x86-unwind-add-hardcoded-orc-entry-for-null.patch
	x86-unwind-handle-null-pointer-calls-better-in-frame-unwinder.patch