4.18-stable patches

4.18-stable patches

added patches:
	blkcg-introduce-blkg_root_lookup.patch
	block-blk_init_allocated_queue-set-q-fq-as-null-in-the-fail-case.patch
	block-ensure-that-a-request-queue-is-dissociated-from-the-cgroup-controller.patch
	block-fix-infinite-loop-if-the-device-loses-discard-capability.patch
	block-introduce-blk_exit_queue.patch
	block-really-disable-runtime-pm-for-blk-mq.patch
	mmc-block-fix-unsupported-parallel-dispatch-of-requests.patch
	mmc-renesas_sdhi_internal_dmac-fix-define-rst_reserved_bits.patch
	mmc-renesas_sdhi_internal_dmac-mask-dmac-interrupts.patch
	readahead-stricter-check-for-bdi-io_pages.patch
	spi-cadence-change-usleep_range-to-udelay-for-atomic-context.patch
	spi-davinci-fix-a-null-pointer-dereference.patch
	spi-pxa2xx-add-support-for-intel-ice-lake.patch
	spi-spi-fsl-dspi-fix-imprecise-abort-on-vf500-during-probe.patch