Correct LoRaWAN license header

Author: kjbracey

features/lorawan/system/lorawan_data_structures.h

@@ -4,20 +4,31 @@
  * @brief Contains common data structures used by Mbed-OS
  *        LoRaWAN mplementation.
  *
- * Copyright (c) 2017, Arm Limited and affiliates.
- * SPDX-License-Identifier: Apache-2.0
+ *  \code
+ *   ______                              _
+ *  / _____)             _              | |
+ * ( (____  _____ ____ _| |_ _____  ____| |__
+ *  \____ \| ___ |    (_   _) ___ |/ ___)  _ \
+ *  _____) ) ____| | | || |_| ____( (___| | | |
+ * (______/|_____)_|_|_| \__)_____)\____)_| |_|
+ *   (C)2013 Semtech
+ *  ___ _____ _   ___ _  _____ ___  ___  ___ ___
+ * / __|_   _/_\ / __| |/ / __/ _ \| _ \/ __| __|
+ * \__ \ | |/ _ \ (__| ' <| _| (_) |   / (__| _|
+ * |___/ |_/_/ \_\___|_|\_\_| \___/|_|_\\___|___|
+ * embedded.connectivity.solutions===============
+ *
+ * \endcode
+ *
+ * Description: LoRa PHY layer
  *
- * 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
+ * License: Revised BSD License, see LICENSE.TXT file include in the project
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ * Maintainer: Miguel Luis ( Semtech ), Gregory Cristian ( Semtech ) and Daniel Jaeckle ( STACKFORCE )
+ *
+ * Copyright (c) 2017, Arm Limited and affiliates.
+ * SPDX-License-Identifier: BSD-3-Clause
  *
- * 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.
  */
 
 #ifndef LORAWAN_SYSTEM_LORAWAN_DATA_STRUCTURES_H_