Merge "Building mainline modules from source is now the default" into main am:...

Merge "Building mainline modules from source is now the default" into main am: cf7dd643 am: 77968e37

Original change: https://android-review.googlesource.com/c/platform/build/+/3073489



Change-Id: I7fca31161ffa412e99ca67ff2faf6bc9d745980a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>