4.17-stable patches

4.17-stable patches

added patches:
	blkdev-__blkdev_direct_io_simple-fix-leak-in-error-case.patch
	block-bio_iov_iter_get_pages-fix-size-of-last-iovec.patch
	block-bio_iov_iter_get_pages-pin-more-pages-for-multi-segment-ios.patch
	block-reset-bi_iter.bi_done-after-splitting-bio.patch
	ext4-check-for-allocation-block-validity-with-block-group-locked.patch
	ext4-fix-check-to-prevent-initializing-reserved-inodes.patch
	ext4-fix-false-negatives-and-false-positives-in-ext4_check_descriptors.patch
	ext4-fix-inline-data-updates-with-checksums-enabled.patch
	gpio-of-handle-fixed-regulator-flags-properly.patch
	gpio-uniphier-set-legitimate-irq-trigger-type-in-.to_irq-hook.patch
	i2c-rcar-handle-rxdma-hw-behaviour-on-gen3.patch
	nvmet-fc-fix-target-sgl-list-on-large-transfers.patch
	random-mix-rdrand-with-entropy-sent-in-from-userspace.patch
	squashfs-be-more-careful-about-metadata-corruption.patch