Add OWNERS file for power AIDL. am: 54f0b528 am: 6b4861ca am: a3b783df am: 9beaa758

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2220004



Change-Id: I34880df8240b3a6a4740060c437daaf8f1290547
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>