Allow running of a custom script after factory reset

Change-Id: I33e6d72bf93103052551f33da51ba4af9a5f88c9

partitionmanager.cpp

@@ -1187,6 +1187,7 @@ int TWPartitionManager::Factory_Reset(void) {
 				ret = false;
 		}
 	}
+	TWFunc::check_and_run_script("/sbin/factoryreset.sh", "Factory Reset Script");
 	return ret;
 }