Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/arch/powerpc/include/asm/ppc440gp.h b/arch/powerpc/include/asm/ppc440gp.h
index 7eb1621..01b66c0 100644
--- a/arch/powerpc/include/asm/ppc440gp.h
+++ b/arch/powerpc/include/asm/ppc440gp.h
@@ -2,7 +2,7 @@
  * (C) Copyright 2010
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _PPC440GP_H_