Standardize command usage messages with cmd_usage()

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/BuS/EB+MCF-EV123/EB+MCF-EV123.c b/board/BuS/EB+MCF-EV123/EB+MCF-EV123.c
index d509a8f..753d85b 100644
--- a/board/BuS/EB+MCF-EV123/EB+MCF-EV123.c
+++ b/board/BuS/EB+MCF-EV123/EB+MCF-EV123.c
@@ -144,7 +144,7 @@
 		rcode = 0;
 		break;
 	default:
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		rcode = 1;
 		break;
 	}