[Mellanox] Add copyright header to ECMP calculator files (#14825)

- Why I did it
Add NVIDIA Copyright header to NVIDIA files added lately

- How I did it
Add NVIDIA Copyright header for the relevant files

- How to verify it
N/A (only commented text was added).

platform/mellanox/docker-syncd-mlnx/ecmp_calculator/ecmp_calc.py

@@ -1,4 +1,20 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2022-2023 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.
+#
 
 import json, jsonschema
 import argparse

platform/mellanox/docker-syncd-mlnx/ecmp_calculator/ecmp_calc_sdk.py

@@ -1,4 +1,20 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2022-2023 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.
+#
 
 from python_sdk_api.sx_api import *
 from port_utils import sx_check_rc, SWITCH_ID

platform/mellanox/docker-syncd-mlnx/ecmp_calculator/packet_scheme.py

@@ -1,4 +1,20 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2022-2023 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.
+#
 
 PACKET_SCHEME = {
     "type" : "object",

platform/mellanox/docker-syncd-mlnx/lib/port_utils.py

@@ -1,4 +1,20 @@
 #!/usr/bin/env python3
+#
+# Copyright (c) 2022-2023 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.
+#
 
 from python_sdk_api.sx_api import *
 import inspect