add reboot-to-bootloader and power down options to recovery menu

Useful when debugging or developing for recovery.

Change-Id: Ic3ab42d5e848ad3488f1c575339b55e45c8a024b
diff --git a/device.h b/device.h
index 583de75..df71377 100644
--- a/device.h
+++ b/device.h
@@ -66,7 +66,8 @@
     virtual int HandleMenuKey(int key, int visible) = 0;
 
     enum BuiltinAction { NO_ACTION, REBOOT, APPLY_EXT, APPLY_CACHE,
-                         APPLY_ADB_SIDELOAD, WIPE_DATA, WIPE_CACHE };
+                         APPLY_ADB_SIDELOAD, WIPE_DATA, WIPE_CACHE,
+                         REBOOT_BOOTLOADER, SHUTDOWN };
 
     // Perform a recovery action selected from the menu.
     // 'menu_position' will be the item number of the selected menu