Retry: Enable mainline prebuilts on tm-dev branch. am: c7b5e2c0

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/18557348



Change-Id: I4d26e845f16bea8b3480c642bc0e94c3af795e2a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>