Update year in copyright text to 2014

Change-Id: Ic7fb61aabae1d515b9e6baf3dd003807ff42da60
diff --git a/include/asm_macros.S b/include/asm_macros.S
index 786c52a..4294be4 100644
--- a/include/asm_macros.S
+++ b/include/asm_macros.S
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met: