Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/io.h b/include/configs/io.h
index 79ada68..2d67cfc 100644
--- a/include/configs/io.h
+++ b/include/configs/io.h
@@ -2,7 +2,7 @@
  * (C) Copyright 2010
  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __CONFIG_H