4.4-stable patches

4.4-stable patches

added patches:
	bcache-release-dc-writeback_lock-properly-in-bch_writeback_thread.patch
	fb-fix-lost-console-when-the-user-unplugs-a-usb-adapter.patch
	fs-quota-fix-spectre-gadget-in-do_quotactl.patch
	getxattr-use-correct-xattr-length.patch
	iommu-vt-d-add-definitions-for-pfsid.patch
	iommu-vt-d-fix-dev-iotlb-pfsid-use.patch
	mm-tlb-remove-tlb_remove_table-non-concurrent-condition.patch
	osf_getdomainname-use-copy_to_user.patch
	perf-auxtrace-fix-queue-resize.patch
	pwm-tiehrpwm-fix-disabling-of-output-of-pwms.patch
	revert-ubifs-fix-potential-integer-overflow-in-allocation.patch
	sys-don-t-hold-uts_sem-while-accessing-userspace-memory.patch
	ubifs-check-data-node-size-before-truncate.patch
	ubifs-fix-memory-leak-in-lprobs-self-check.patch
	ubifs-fix-synced_i_size-calculation-for-xattr-inodes.patch
	udlfb-set-optimal-write-delay.patch
	userns-move-user-access-out-of-the-mutex.patch