Update comments

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1004 42af7a65-404d-4744-a932-0658087f49c3

arch/arm/src/dm320/dm320_usbdev.c

@@ -1086,6 +1086,11 @@ static void dm320_cancelrequests(struct dm320_ep_s *privep)
 
 /*******************************************************************************
  * Name: dm320_epfindbyaddr
+ *
+ * Description:
+ *   Find the physical endpoint structure corresponding to a logic endpoint
+ *   address
+ *
  *******************************************************************************/
 
 static struct dm320_ep_s *dm320_epfindbyaddr(struct dm320_usbdev_s *priv,