Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: mma
Change-Id: I0b1f77dfae5d2258969e33d85ecf45401ffbdfaa
diff --git a/graphics/bufferqueue/1.0/IGraphicBufferProducer.hal b/graphics/bufferqueue/1.0/IGraphicBufferProducer.hal
index c59a16c..87bb814 100644
--- a/graphics/bufferqueue/1.0/IGraphicBufferProducer.hal
+++ b/graphics/bufferqueue/1.0/IGraphicBufferProducer.hal
@@ -546,7 +546,7 @@
      */
     disconnect(
             int32_t api,
-            DisconnectMode mode /* = DisconnectMode::API */
+            DisconnectMode mode /** = DisconnectMode::API */
         ) generates (
             Status status
         );