Coding Style cleanup: remove trailing white space

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index b3ed6ea..236a753 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -6,7 +6,7 @@
  * Based on Xilinx gmac driver:
  * (C) Copyright 2011 Xilinx
  *
- * SPDX-License-Identifier:	GPL-2.0+ 
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>