Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/esd/du440/init.S b/board/esd/du440/init.S
index f3d76b8..ab4b6ce 100644
--- a/board/esd/du440/init.S
+++ b/board/esd/du440/init.S
@@ -2,7 +2,7 @@
  * (C) Copyright 2008
  * Matthias Fuchs, esd gmbh, matthias.fuchs@esd-electronics.com
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <asm-offsets.h>