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

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



Change-Id: I92a18ef6c8a719e0760cdf50133b5c1d7c160fc1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>