Merge "[config] Boards can supply custom super image script" am: 6dcf429d

Original change: https://android-review.googlesource.com/c/platform/build/+/2496355



Change-Id: I9bfbdb88583a77da1dcddc78d10990ecc75ac889
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>