Build power.ranchu and add power hal to manifest.xml

Bug: 37302997
Bug: 37863919

Test: Build and run sdk_google_aw_x86-userdebug emulator

Change-Id: Id8fc018b005b011426d3e0bc885ee8ef00dec1eb
(cherry picked from commit 4aa73d308e16905c5971d7c7ede464a824ed770a)
2 files changed