stable aidl Power HAL policy

Test: boot and dumpsys -l
Change-Id: I58022c9e0c24ba4e2d695acf63375c9f74c51b22
diff --git a/private/service_contexts b/private/service_contexts
index 26d9f5c..2402ab3 100644
--- a/private/service_contexts
+++ b/private/service_contexts
@@ -1,5 +1,6 @@
-android.hardware.rebootescrow.IRebootEscrow/default u:object_r:hal_rebootescrow_service:s0
-android.hardware.vibrator.IVibrator/default u:object_r:hal_vibrator_service:s0
+android.hardware.power.IPower/default                                u:object_r:hal_power_service:s0
+android.hardware.rebootescrow.IRebootEscrow/default                  u:object_r:hal_rebootescrow_service:s0
+android.hardware.vibrator.IVibrator/default                          u:object_r:hal_vibrator_service:s0
 
 accessibility                             u:object_r:accessibility_service:s0
 account                                   u:object_r:account_service:s0