time_in_state: change map format to improve read performance
am: 55aea86204

Change-Id: Ia0774aa0402484ee1b15a1ab8638b72f29518c22
tree: da3ff8aa8a9867c4e09039fdad478aa6b80c0543
  1. test/
  2. Android.bp
  3. time_in_state.c