Merge 4.19.8 into android-4.19

Changes in 4.19.8
	blk-mq: fix corruption with direct issue
	test_hexdump: use memcpy instead of strncpy
	unifdef: use memcpy instead of strncpy
	iser: set sector for ambiguous mr status errors
	uprobes: Fix handle_swbp() vs. unregister() + register() race once more
	mtd: nand: Fix memory allocation in nanddev_bbt_init()
	arm64: ftrace: Fix to enable syscall events on arm64
	sched, trace: Fix prev_state output in sched_switch tracepoint
	tracepoint: Use __idx instead of idx in DO_TRACE macro to make it unique
	MIPS: ralink: Fix mt7620 nd_sd pinmux
	mips: fix mips_get_syscall_arg o32 check
	IB/mlx5: Avoid load failure due to unknown link width
	tracing/fgraph: Fix set_graph_function from showing interrupts
	drm/ast: Fix incorrect free on ioregs
	drm/amd/dm: Don't forget to attach MST encoders
	drm: set is_master to 0 upon drm_new_set_master() failure
	drm/meson: Fixes for drm_crtc_vblank_on/off support
	drm/meson: Enable fast_io in meson_dw_hdmi_regmap_config
	drm/meson: Fix OOB memory accesses in meson_viu_set_osd_lut()
	userfaultfd: use ENOENT instead of EFAULT if the atomic copy user fails
	userfaultfd: shmem: allocate anonymous memory for MAP_PRIVATE shmem
	userfaultfd: shmem: add i_size checks
	userfaultfd: shmem: UFFDIO_COPY: set the page dirty if VM_WRITE is not set
	kgdboc: Fix restrict error
	kgdboc: Fix warning with module build
	svm: Add mutex_lock to protect apic_access_page_done on AMD systems
	selinux: add support for RTM_NEWCHAIN, RTM_DELCHAIN, and RTM_GETCHAIN
	i40e: Fix deletion of MAC filters
	scsi: lpfc: fix block guard enablement on SLI3 adapters
	Input: xpad - quirk all PDP Xbox One gamepads
	Input: synaptics - add PNP ID for ThinkPad P50 to SMBus
	Input: matrix_keypad - check for errors from of_get_named_gpio()
	Input: cros_ec_keyb - fix button/switch capability reports
	Input: elan_i2c - add ELAN0620 to the ACPI table
	Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15ARR
	Input: elan_i2c - add support for ELAN0621 touchpad
	btrfs: tree-checker: Don't check max block group size as current max chunk size limit is unreliable
	ARC: change defconfig defaults to ARCv2
	arc: [devboards] Add support of NFSv3 ACL
	tipc: use destination length for copy string
	blk-mq: punt failed direct issue to dispatch list
	Linux 4.19.8

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