[Mellanox] Add NVIDIA Copyright header to Mellanox files (#1832)

- What I did
Add NVIDIA Copyright header to "mellanox" files

- How I did it
Add NVIDIA Copyright header as a comment for Mellanox files

- How to verify it
Basic checkers

Author: dprital

config/plugins/mlnx.py

@@ -1,4 +1,21 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2017-2021 NVIDIA CORPORATION & AFFILIATES.
+# Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 #
 # main.py
 #

show/plugins/mlnx.py

@@ -1,4 +1,21 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2017-2021 NVIDIA CORPORATION & AFFILIATES.
+# Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 #
 # main.py
 #