Match timestamp units with the interface definitions

Bug: b/147376950
Test: Local build on emulator
      atest CarServiceUnitTest

Change-Id: Iabacda3359293092eace70bd89275beeb0558678
diff --git a/service/src/com/android/car/hal/PowerHalService.java b/service/src/com/android/car/hal/PowerHalService.java
index aebf7dd..0eaa5cc 100644
--- a/service/src/com/android/car/hal/PowerHalService.java
+++ b/service/src/com/android/car/hal/PowerHalService.java
@@ -205,7 +205,7 @@
      */
     public void sendSleepEntry(int wakeupTimeSec) {
         Log.i(CarLog.TAG_POWER, "send sleep entry");
-        setPowerState(VehicleApPowerStateReport.DEEP_SLEEP_ENTRY, wakeupTimeSec * 1000);
+        setPowerState(VehicleApPowerStateReport.DEEP_SLEEP_ENTRY, wakeupTimeSec);
     }
 
     /**
@@ -230,7 +230,7 @@
      */
     public void sendShutdownStart(int wakeupTimeSec) {
         Log.i(CarLog.TAG_POWER, "send shutdown start");
-        setPowerState(VehicleApPowerStateReport.SHUTDOWN_START, wakeupTimeSec * 1000);
+        setPowerState(VehicleApPowerStateReport.SHUTDOWN_START, wakeupTimeSec);
     }
 
     /**