5.2-stable patches

5.2-stable patches

added patches:
	staging-bcm2835-camera-ensure-all-buffers-are-returned-on-disable.patch
	staging-bcm2835-camera-handle-empty-eos-buffers-whilst-streaming.patch
	staging-bcm2835-camera-remove-check-of-the-number-of-buffers-supplied.patch
	staging-bcm2835-camera-replace-spinlock-protecting-context_map-with-mutex.patch
	staging-fsl-dpaa2-ethsw-fix-memory-leak-of-switchdev_work.patch
	staging-rtl8712-reduce-stack-usage-again.patch
	staging-vchiq-make-wait-events-interruptible.patch
	staging-vchiq-revert-switch-to-wait_for_completion_killable.patch
	staging-vchiq_2835_arm-revert-quit-using-custom-down_interruptible.patch