Align default implementation with latest VSR.

VSR requires to support power HAL V2 and beyond, this patch changes the
default implementation to reflect that.

Bug: b/253516147
Test: atest VtsHalPowerTargetTest
Change-Id: I56f6f847f4c47775db6350b8a3fcd7ee9c9cdf17
Merged-In: I56f6f847f4c47775db6350b8a3fcd7ee9c9cdf17
5 files changed