Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: mma
Change-Id: I0b1f77dfae5d2258969e33d85ecf45401ffbdfaa
diff --git a/broadcastradio/1.1/IBroadcastRadio.hal b/broadcastradio/1.1/IBroadcastRadio.hal
index a6347c7..dd37d49 100644
--- a/broadcastradio/1.1/IBroadcastRadio.hal
+++ b/broadcastradio/1.1/IBroadcastRadio.hal
@@ -20,7 +20,7 @@
 
 interface IBroadcastRadio extends @1.0::IBroadcastRadio {
 
-    /*
+    /**
      * Retrieve implementation properties.
      * @return properties A Properties structure containing implementation
      *                    description and capabilities.