[automerger skipped] Retry: Enable mainline prebuilts on tm-dev branch. am:...

[automerger skipped] Retry: Enable mainline prebuilts on tm-dev branch. am: c7b5e2c0 -s ours am: 0e340a0d -s ours

am skip reason: Merged-In I9731400acfade95b3eab8f2d99fddb4cf856aa91 with SHA-1 4a71082e is already in history

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



Change-Id: I79b67cf044a39f609cd047bcfe47fbef5aa6b0f8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>