DO NOT MERGE Migrate to androidx namespace for support library.

Also, add a PREUPLOAD.cfg file to lint future changes.

Do not merge this change since the migration has already happened on
master.

Test: build and deploy SystemUpdater
Bug: 77601495
Bug: 77920207
Change-Id: I51eb889092d7b50884fccc329319f61dc0b6bf18
6 files changed
tree: c955ab45a37856d53933638c9a8290a3093e0833
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml
  5. PREUPLOAD.cfg