Standardize command usage messages with cmd_usage()

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/hymod/bsp.c b/board/hymod/bsp.c
index 1848bb3..54b3b86 100644
--- a/board/hymod/bsp.c
+++ b/board/hymod/bsp.c
@@ -272,7 +272,7 @@
 		break;
 	}
 
-	printf ("Usage:\n%s\n", cmdtp->usage);
+	cmd_usage(cmdtp);
 	return 1;
 }
 U_BOOT_CMD(
@@ -324,7 +324,7 @@
 		/* fall through ... */
 
 	default:
-		printf ("Usage:\n%s\n", cmdtp->usage);
+		cmd_usage(cmdtp);
 		return 1;
 	}