power/stats: Add EnergyConsumerAttribution interface am: 192ee6b315 am: 9a13988348

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1576529

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Idff7895b23aded7aee54a5f35583b77c9fa15b91