MLECO-3583: Update copyright notice according to new guidelines

Change-Id: I0f057b33993e5196a60e52f4fb0c60e09693dcfe
diff --git a/scripts/py/templates/audio.cc.template b/scripts/py/templates/audio.cc.template
index f1e29ef..fd33df4 100644
--- a/scripts/py/templates/audio.cc.template
+++ b/scripts/py/templates/audio.cc.template
@@ -1,5 +1,5 @@
 {#
- Copyright (c) 2021 Arm Limited. All rights reserved.
+ SPDX-FileCopyrightText: Copyright 2021 Arm Limited and/or its affiliates <open-source-office@arm.com>
  SPDX-License-Identifier: Apache-2.0
 
  Licensed under the Apache License, Version 2.0 (the "License");