Merge "power/stats: Return exception codes on error" am: 777542355a am: 3dd0588218 am: 4abdf481ec

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1626963

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I107b4c0bd1a205cdaa061e483334f0c52649cf9c