Rename addServiceAnnouncement-related methods

Address feedback on the API

Fixes: 155926142
Test: CTS
Change-Id: I69e17faf4d09ab686fdd97975bc7f069597b87b3
diff --git a/telephony/api/system-current.txt b/telephony/api/system-current.txt
index f4e2f14..4b425bd 100644
--- a/telephony/api/system-current.txt
+++ b/telephony/api/system-current.txt
@@ -1937,7 +1937,7 @@
   public class MbmsDownloadServiceBase extends android.os.Binder implements android.os.IInterface {
     ctor public MbmsDownloadServiceBase();
     method public int addProgressListener(android.telephony.mbms.DownloadRequest, android.telephony.mbms.DownloadProgressListener) throws android.os.RemoteException;
-    method public int addServiceAnnouncementFile(int, @NonNull byte[]);
+    method public int addServiceAnnouncement(int, @NonNull byte[]);
     method public int addStatusListener(android.telephony.mbms.DownloadRequest, android.telephony.mbms.DownloadStatusListener) throws android.os.RemoteException;
     method public android.os.IBinder asBinder();
     method public int cancelDownload(android.telephony.mbms.DownloadRequest) throws android.os.RemoteException;