[automerger skipped] power.stats: Add power.stats HIDL interface am: f12c171b3a am: 12af3a42c8
am: c5e8ab205b -s ours
am skip reason: change_id I6e3153c9fcd2d67e4a566a4621d7aa4c01da7636 with SHA1 f91dcb5bfd is in history

Change-Id: I7786ef0d490adc4c4ae933cc54835f9f7a65cea6