ShutdownThread: set soft reboot trigger accordingly

Change-Id: I72bd52aa1492d356e368e8c60897002c1f110172
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

Conflicts:
	services/java/com/android/server/power/ShutdownThread.java

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>