Add OWNERS file for power AIDL. am: 54f0b5287e am: 6b4861ca13 am: a3b783dfee

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

Change-Id: Ie6405e2722f0ebcbe141794aaa2c70e87ccd5e7b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>