4.19-stable patches

4.19-stable patches

added patches:
	blk-rq-qos-fix-first-node-deletion-of-rq_qos_del.patch
	btrfs-add-missing-extents-release-on-file-extent-cluster-relocation-error.patch
	btrfs-block-group-fix-a-memory-leak-due-to-missing-btrfs_put_block_group.patch
	btrfs-check-for-the-full-sync-flag-while-holding-the-inode-lock-during-fsync.patch
	btrfs-tracepoints-fix-bad-entry-members-of-qgroup-events.patch
	cifs-avoid-using-mid-0xffff.patch
	cifs-fix-use-after-free-of-file-info-structures.patch
	cpufreq-avoid-cpufreq_suspend-deadlock-on-system-shutdown.patch
	dm-cache-fix-bugs-when-a-gfp_nowait-allocation-fails.patch
	memstick-jmb38x_ms-fix-an-error-handling-path-in-jmb38x_ms_probe.patch
	pci-pm-fix-pci_power_up.patch
	perf-aux-fix-aux-output-stopping.patch
	pinctrl-armada-37xx-fix-control-of-pins-32-and-up.patch
	pinctrl-armada-37xx-swap-polarity-on-led-group.patch
	pinctrl-cherryview-restore-strago-dmi-workaround-for-all-versions.patch
	tracing-fix-race-in-perf_trace_buf-initialization.patch
	x86-apic-x2apic-fix-a-null-pointer-deref-when-handling-a-dying-cpu.patch
	x86-boot-64-make-level2_kernel_pgt-pages-invalid-outside-kernel-area.patch
	x86-hyperv-make-vapic-support-x2apic-mode.patch
	xen-netback-fix-error-path-of-xenvif_connect_data.patch