libril: Store the system time when NITZ is
 received.

If cached value for NITZ is used, the time at which it was
received needs to be cached too.

Test: Basic telephony sanity
Bug: 72283604
Change-Id: I8f443171c4583e3eab9be7973d7714ae6c7ab6af
diff --git a/ril/libril/ril_service.h b/ril/libril/ril_service.h
index 441b587..80e9beb 100644
--- a/ril/libril/ril_service.h
+++ b/ril/libril/ril_service.h
@@ -711,6 +711,8 @@
 
 pthread_rwlock_t * getRadioServiceRwlock(int slotId);
 
+void setNitzTimeReceived(int slotId, long timeReceived);
+
 }   // namespace radio
 
 #endif  // RIL_SERVICE_H
\ No newline at end of file