Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/tools/aisimage.h b/tools/aisimage.h
index 1f092db..e1aa3ef 100644
--- a/tools/aisimage.h
+++ b/tools/aisimage.h
@@ -2,7 +2,7 @@
  * (C) Copyright 2011
  * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _AISIMAGE_H_