Fix some more print() format errors.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/bc3450/cmd_bc3450.c b/board/bc3450/cmd_bc3450.c
index f7f0013..48bc65d 100644
--- a/board/bc3450/cmd_bc3450.c
+++ b/board/bc3450/cmd_bc3450.c
@@ -189,7 +189,7 @@
 	if (rc > 0x0F)
 		return -1;
 
-	printf ("0x%x\n", rc);
+	printf ("0x%lx\n", rc);
 	return 0;
 }