gralloc4: Add camera write support for RGB_888 am: 69d6c42872

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/google/gchips/+/22957326

Change-Id: Iea18051cda44a078352a90203305dec7f3bda9fa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>