4.19-stable patches

added patches:
	crypto-qcom-rng-fix-infinite-loop-on-requests-not-multiple-of-word_sz.patch
	drm-dp-mst-fix-a-possible-memory-leak-in-fetch_monitor_name.patch
	fix-double-fget-in-vhost_net_set_backend.patch
	pci-pm-avoid-putting-elo-i2-pcie-ports-in-d3cold.patch
	perf-fix-sys_perf_event_open-race-against-self.patch