5.5-stable patches

5.5-stable patches

added patches:
	arm-dma-api-fix-max_pfn-off-by-one-error-in-__dma_supported.patch
	dm-crypt-fix-benbi-iv-constructor-crash-if-used-in-authenticated-mode.patch
	dm-crypt-fix-gfp-flags-passed-to-skcipher_request_alloc.patch
	dm-fix-potential-for-q-make_request_fn-null-pointer.patch
	dm-space-map-common-fix-to-ensure-new-block-isn-t-already-in-use.patch
	dm-thin-fix-use-after-free-in-metadata_pre_commit_callback.patch
	dm-thin-metadata-use-pool-locking-at-end-of-dm_pool_metadata_close.patch
	dm-writecache-fix-incorrect-flush-sequence-when-doing-ssd-mode-commit.patch
	dm-zoned-support-zone-sizes-smaller-than-128mib.patch
	of-add-of_dma_default_coherent-select-it-on-powerpc.patch