soundwire: amd: update license

Update license to dual license to align with Sound Open Firmware (SOF)
driver as SOF uses dual license.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Link: https://msgid.link/r/20240129055147.1493853-3-Vijendar.Mukunda@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/soundwire/amd_manager.c

-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * SoundWire AMD Manager driver
  *
@@ -1215,5 +1215,5 @@ module_platform_driver(amd_sdw_driver);
 
 MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
 MODULE_DESCRIPTION("AMD SoundWire driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS("platform:" DRV_NAME);

drivers/soundwire/amd_manager.h

-/* SPDX-License-Identifier: GPL-2.0+ */
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
 /*
  * Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.
  */

include/linux/soundwire/sdw_amd.h

-/* SPDX-License-Identifier: GPL-2.0+ */
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
 /*
  * Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.
  */