Update license texts

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
diff --git a/tests/src/drivers/cipher.c b/tests/src/drivers/cipher.c
index 9db5061..95dc2b6 100644
--- a/tests/src/drivers/cipher.c
+++ b/tests/src/drivers/cipher.c
@@ -2,7 +2,7 @@
  * Test driver for cipher functions.
  * Currently only supports multi-part operations using AES-CTR.
  */
-/*  Copyright (C) 2020, ARM Limited, All Rights Reserved
+/*  Copyright The Mbed TLS Contributors
  *  SPDX-License-Identifier: Apache-2.0
  *
  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
@@ -16,8 +16,6 @@
  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
- *
- *  This file is part of mbed TLS (https://tls.mbed.org)
  */
 
 #if !defined(MBEDTLS_CONFIG_FILE)