Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: make
Change-Id: Ic77394d4d2e1ccedba3a28230d870c5d6108bd40
diff --git a/renderscript/1.0/IDevice.hal b/renderscript/1.0/IDevice.hal
index 7b1b866..62ce521 100644
--- a/renderscript/1.0/IDevice.hal
+++ b/renderscript/1.0/IDevice.hal
@@ -21,7 +21,7 @@
 
 interface IDevice {
 
-    /*
+    /**
      * Creates a RenderScript context.
      *
      * @param sdkVersion Target RS API level