Add corstone-300 and corstone-310 platforms

* Add V8.1M arch support
* Fix watchdog enable
* Add cmsdk uart baudrate setup
* Fix ident in modified files (\t -> 4*whitespace)v
diff --git a/api-tests/CMakeLists.txt b/api-tests/CMakeLists.txt
index 8c37460..5dfb56f 100644
--- a/api-tests/CMakeLists.txt
+++ b/api-tests/CMakeLists.txt
@@ -1,5 +1,5 @@
 #/** @file
-# * Copyright (c) 2019-2022, Arm Limited or its affiliates. All rights reserved.
+# * Copyright (c) 2019-2023, Arm Limited or its affiliates. All rights reserved.
 # * SPDX-License-Identifier : Apache-2.0
 # *
 # * Licensed under the Apache License, Version 2.0 (the "License");
@@ -122,6 +122,7 @@
 list(APPEND PSA_CPU_ARCH_SUPPORT
 	armv8m_ml
 	armv8m_bl
+	armv81m_ml
 	armv7m
 	armv8a
 )