Merge "Revert "Enable mainline prebuilts on tm-dev branch."" into tm-dev am:...

Merge "Revert "Enable mainline prebuilts on tm-dev branch."" into tm-dev am: 525d7a8a am: d873f7a1

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/18516629



Change-Id: I5326820364388c4d9780b83165d4c462b864750b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>