[Palamida scan] SWDEV-553054 Adding missing copyrights information (#900)

* Add missing copyright headers in rocprofiler-systems
* Update python-tests
* Update causal test

---------

Co-authored-by: David Galiffi <David.Galiffi@amd.com>

projects/rocprofiler-systems/examples/code-coverage/code-coverage.cpp

@@ -1,3 +1,5 @@
+// Copyright (c) Advanced Micro Devices, Inc.
+// SPDX-License-Identifier:  MIT
 
 #include <atomic>
 #include <cstdio>

projects/rocprofiler-systems/examples/code-coverage/code-coverage.py

@@ -1,5 +1,8 @@
 #!@PYTHON_EXECUTABLE@
 
+# Copyright (c) Advanced Micro Devices, Inc.
+# SPDX-License-Identifier: MIT
+
 import rocprofsys
 import argparse