cppcheck: Exclude CMSIS 6 library

Signed-off-by: Gergely Korcsák <gergely.korcsak@arm.com>
Change-Id: I5947988f91ee60802fc85643a6aaa19aecfb4730
diff --git a/cppcheck/tfm-suppress-list.txt b/cppcheck/tfm-suppress-list.txt
index e93bf54..8f2e19f 100644
--- a/cppcheck/tfm-suppress-list.txt
+++ b/cppcheck/tfm-suppress-list.txt
@@ -1,5 +1,5 @@
 //-------------------------------------------------------------------------------
-// Copyright (c) 2018-2022, Arm Limited and Contributors. All rights reserved.
+// Copyright (c) 2018-2024, Arm Limited and Contributors. All rights reserved.
 //
 // SPDX-License-Identifier: BSD-3-Clause
 //
@@ -55,6 +55,7 @@
 *:*/mcuboot/*
 *:*/mbedtls/*
 *:lib/ext/qcbor-src/*
+*:lib/ext/cmsis-src/*
 
 //cppcheck shouldn't complain about unused function.
 unusedFunction