When the system boot, migrate big mapped movable pages created by
Android boot sequence(e.g., zygote) out of cma to improve first cma
allocation. The test with cma trace shows cma allocation reduction
from 136ms to 25ms.
Test: atest com.google.android.camera.pts.SecurePreviewTest with cma
trace
Bug: 218731671
Signed-off-by: Minchan Kim <minchan@google.com>
Change-Id: Iaa2a2f8c0c3256face3ce9cd21fa4acd6fb531ea