4.9-stable patches

4.9-stable patches

added patches:
	btrfs-ensure-that-a-dup-or-raid1-block-group-has-exactly-two-stripes.patch
	btrfs-fix-corruption-reading-shared-and-compressed-extents-after-hole-punching.patch
	btrfs-setup-a-nofs-context-for-memory-allocation-at-__btrfs_set_acl.patch
	clocksource-drivers-exynos_mct-clear-timer-interrupt-when-shutdown.patch
	clocksource-drivers-exynos_mct-move-one-shot-check-from-tick-clear-to-isr.patch
	crypto-pcbc-remove-bogus-memcpy-s-with-src-dest.patch
	fs-devpts-always-delete-dcache-dentry-s-in-dput.patch
	m68k-add-ffreestanding-to-cflags.patch
	regulator-max77620-initialize-values-for-dt-properties.patch
	regulator-s2mpa01-fix-step-values-for-some-ldos.patch
	regulator-s2mps11-fix-steps-for-buck7-buck8-and-ldo35.patch
	s390-virtio-handle-find-on-invalid-queue-gracefully.patch
	scsi-sd-optimal-i-o-size-should-be-a-multiple-of-physical-block-size.patch
	scsi-target-iscsi-avoid-iscsit_release_commands_from_conn-deadlock.patch
	scsi-virtio_scsi-don-t-send-sc-payload-with-tmfs.patch
	spi-pxa2xx-setup-maximum-supported-dma-transfer-length.patch
	spi-ti-qspi-fix-mmap-read-when-more-than-one-cs-in-use.patch
	splice-don-t-merge-into-linked-buffers.patch