LICENSE: update with latest text

Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
diff --git a/vpx_ports/emms.asm b/vpx_ports/emms.asm
index 03e3499..096176d 100644
--- a/vpx_ports/emms.asm
+++ b/vpx_ports/emms.asm
@@ -1,10 +1,11 @@
 ;
 ;  Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
 ;
-;  Use of this source code is governed by a BSD-style license and patent
-;  grant that can be found in the LICENSE file in the root of the source
-;  tree. All contributing project authors may be found in the AUTHORS
-;  file in the root of the source tree.
+;  Use of this source code is governed by a BSD-style license 
+;  that can be found in the LICENSE file in the root of the source
+;  tree. An additional intellectual property rights grant can be found
+;  in the file PATENTS.  All contributing project authors may 
+;  be found in the AUTHORS file in the root of the source tree.
 ;