Beef up the documentation of VehicleApPowerStateReq

- HIBERNATION_ENTRY and HIBERNATION_EXIT are added next to
DEEP_SLEEP_ENTRY and DEEP_SLEEP_EXIT.

Bug: 206690574
Test: build okay
Change-Id: I157bb4798babd415f9a6302ce45aeb2560a505fd
diff --git a/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleApPowerStateReq.aidl b/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleApPowerStateReq.aidl
index 82f98d8..1031ebb 100644
--- a/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleApPowerStateReq.aidl
+++ b/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleApPowerStateReq.aidl
@@ -23,6 +23,7 @@
      * This requests Android to enter its normal operating state.
      * This may be sent after the AP has reported
      * VehicleApPowerStateReport#DEEP_SLEEP_EXIT,
+     * VehicleApPowerStateReport#HIBERNATION_EXIT,
      * VehicleApPowerStateReport#SHUTDOWN_CANCELLED, or
      * VehicleApPowerStateReport#WAIT_FOR_VHAL.
      */
@@ -31,6 +32,7 @@
      * The power controller issues this request to shutdown the system.
      * This may be sent after the AP has reported
      * VehicleApPowerStateReport#DEEP_SLEEP_EXIT,
+     * VehicleApPowerStateReport#HIBERNATION_EXIT,
      * VehicleApPowerStateReport#ON,
      * VehicleApPowerStateReport#SHUTDOWN_CANCELLED,
      * VehicleApPowerStateReport#SHUTDOWN_POSTPONE,
@@ -59,6 +61,7 @@
      * Completes the shutdown process.
      * This may be sent after the AP has reported
      * VehicleApPowerStateReport#DEEP_SLEEP_ENTRY or
+     * VehicleApPowerStateReport#HIBERNATION_ENTRY or
      * VehicleApPowerStateReport#SHUTDOWN_START. The AP will not report new
      * state information after receiving this request.
      */