Merge 4.19.138 into android-4.19-stable

Changes in 4.19.138
	random32: update the net random state on interrupt and activity
	ARM: percpu.h: fix build error
	random: fix circular include dependency on arm64 after addition of percpu.h
	random32: remove net_rand_state from the latent entropy gcc plugin
	random32: move the pseudo-random 32-bit definitions to prandom.h
	ext4: fix direct I/O read error
	Linux 4.19.138

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Icd6c8647a1a5c49b44b9280d9a947f2af6b450db