Add support for MODULES_BUILD_FROM_SOURCE for consistency with am: 5a5367588d

Original change: https://android-review.googlesource.com/c/platform/prebuilts/module_sdk/StatsD/+/1907884

Change-Id: I9a8299c4f1cfd98480cd0f7511b17f75b61ce826
tree: 98d597f075f83f3674ab4b1de757f55c7bd8a07e
  1. .prebuilt_info/
  2. 1/
  3. current/
  4. OWNERS