Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/arch/nios2/cpu/exceptions.S b/arch/nios2/cpu/exceptions.S
index 50200d2..f5fa8d7 100644
--- a/arch/nios2/cpu/exceptions.S
+++ b/arch/nios2/cpu/exceptions.S
@@ -2,7 +2,7 @@
  * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
  * Scott McNutt <smcnutt@psyent.com>
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <config.h>