time-services: Add new offset ATS_TOD_GEN

Adds support for new offset ATS_TOD_GEN to
allow applications to set time in case there
is no other setter of ATS_TOD offset.

Change-Id: I5559b73a0889a2b1d8927c8f0e93c69f643b7865
diff --git a/time_genoff.h b/time_genoff.h
index 6770c9b..50e75bb 100644
--- a/time_genoff.h
+++ b/time_genoff.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2014, 2016, 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2014, 2016, 2018-2020 The Linux Foundation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -56,6 +56,7 @@
 	ATS_TOD_MODEM,
 	ATS_WLAN,
 	ATS_5G,
+	ATS_TOD_GEN,
 	ATS_INVALID
 } time_bases_type;