MA-11385 [Android] Use compressed kernel for imx8

Use compressed kernel image instead of 'Image' for imx8 can reduce
the size of boot image which will save time in AVB to load & verify.
Lz4 compression algorithm has a very fast decompression speed so we
use lz4 compressed Image.lz4 to reduce the decompression time.

Change-Id: Id28d6c5bb1754849f15df65c40ea53551c52037f
Signed-off-by: Luo Ji <ji.luo@nxp.com>
1 file changed