Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/tools/env/fw_env_main.c b/tools/env/fw_env_main.c
index 5f42df3..2b85d78 100644
--- a/tools/env/fw_env_main.c
+++ b/tools/env/fw_env_main.c
@@ -2,7 +2,7 @@
  * (C) Copyright 2000-2008
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*