Implement broadcast radio announcements.

Bug: 68045105
Test: VTS
Change-Id: I14d394862ec34d63218c938779e217c28710e230
diff --git a/broadcastradio/2.0/Android.bp b/broadcastradio/2.0/Android.bp
index f4894ad..7409005 100644
--- a/broadcastradio/2.0/Android.bp
+++ b/broadcastradio/2.0/Android.bp
@@ -8,7 +8,9 @@
     },
     srcs: [
         "types.hal",
+        "IAnnouncementObserver.hal",
         "IBroadcastRadio.hal",
+        "ICloseHandle.hal",
         "ITunerCallback.hal",
         "ITunerSession.hal",
     ],
@@ -18,6 +20,8 @@
     types: [
         "AmFmBandRange",
         "AmFmRegionConfig",
+        "Announcement",
+        "AnnouncementType",
         "ConfigFlag",
         "Constants",
         "DabTableEntry",