Merge "Expose systemReady for SystemServer" am: 56564e061c am: d77b8f6384 am: a71f7d4697

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1640142

Change-Id: I95488b39a32ed9086839eab6c457ed6f75472df1
tree: 11f3b9adf2e5894ad5575a6e332200430e33985d
  1. framework/
  2. service/
  3. OWNERS