net: emaclite: Update copyright text to correct format

Based on recommended guidance Copyright term should be also present in
front of (c). That's why aligned driver to match this pattern.
It helps automated tools with source code scanning.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/xilinx/xilinx_emaclite.c

@@ -4,7 +4,7 @@
  * This is a new flat driver which is based on the original emac_lite
  * driver from John Williams <john.williams@xilinx.com>.
  *
- * 2007 - 2013 (c) Xilinx, Inc.
+ * Copyright (c) 2007 - 2013 Xilinx, Inc.
  */
 
 #include <linux/module.h>