Merge commit '75c79ac616fce0b36ca047e676069e12e1bb30c1' into nanostack_v15_1_0

* commit '75c79ac616fce0b36ca047e676069e12e1bb30c1':
  Squashed 'connectivity/drivers/802.15.4_RF/stm-s2lp-rf-driver/' changes from 7d12478914..089ca0eed7

Author: artokin

connectivity/drivers/802.15.4_RF/stm-s2lp-rf-driver/CMakeLists.txt

@@ -1,5 +1,20 @@
-# Copyright (c) 2020 ARM Limited. All rights reserved.
-# SPDX-License-Identifier: Apache-2.0
+#################################################################################
+## Copyright 2020-2021 Pelion.
+##
+## SPDX-License-Identifier: 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.
+#################################################################################
 
 target_include_directories(mbed-802.15.4-rf
     INTERFACE