LICENSE: update with latest text

Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
diff --git a/solution.mk b/solution.mk
index 783c6f8..21bf065 100644
--- a/solution.mk
+++ b/solution.mk
@@ -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.
 ##