southbridge/amd/sr5650: Fix boot failure on ASUS KGPE-D16

Change-Id: Ia13ba58118a826e830a4dc6e2378b76110fcabad
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/11939
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
diff --git a/src/southbridge/amd/sr5650/ht.c b/src/southbridge/amd/sr5650/ht.c
index c497107..02f4f7f 100644
--- a/src/southbridge/amd/sr5650/ht.c
+++ b/src/southbridge/amd/sr5650/ht.c
@@ -2,6 +2,7 @@
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2010 Advanced Micro Devices, Inc.
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -55,7 +56,7 @@
 	[13] = {4,     ABCD,       30}    /* Dev13 Grp4 [Int - 16..19] */
 };
 
-/* Their name are quite regular. So I undefine them. */
+/* These define names are common, so undefine them to avoid potential issues in other code */
 #undef ABCD
 #undef BCDA
 #undef CDAB