Added missing copyright amendment

Tobski · Tobski · commit 395bce6c859e · 2020-09-08T11:10:27.000+01:00
diff --git a/gtests/Spv.FromFile.cpp b/gtests/Spv.FromFile.cpp
@@ -1,6 +1,7 @@
  //
 // Copyright (C) 2016 Google, Inc.
 // Copyright (C) 2019 ARM Limited.
+// Modifications Copyright (C) 2020 Advanced Micro Devices, Inc. All rights reserved.
 //
 // All rights reserved.
 //
