ARM: zynq: DT: Update years in header

Add this year to the header.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/boot/dts/zynq-zed.dts b/arch/arm/boot/dts/zynq-zed.dts
index 42deb1b..93d1ed1 100644
--- a/arch/arm/boot/dts/zynq-zed.dts
+++ b/arch/arm/boot/dts/zynq-zed.dts
@@ -1,7 +1,6 @@
 /*
- *  Copyright (C) 2011 Xilinx
+ *  Copyright (C) 2011 - 2014 Xilinx
  *  Copyright (C) 2012 National Instruments Corp.
- *  Copyright (C) 2013 Xilinx
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and