Update LICENSE

[ROCm/roctracer commit: 5a76e40d43]
2019-12-04 16:34:23 -06:00
@@ -1,4 +1,5 @@
 Copyright (c) 2018 Advanced Micro Devices, Inc. All rights reserved.
+[MITx11 License]

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal