CMake: greentea: Port PSA Attestation test to CTest

The PSA Attestation test suite requires full RTOS. There is no need
to explicitly check PSA support, because when we build all greentea
tests from the top of Mbed OS, PSA tests only get included if PSA is
enabled.

platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_MBED_PSA_SRV/CMakeLists.txt

@@ -73,3 +73,8 @@ target_link_libraries(mbed-psa
 
 add_subdirectory(test_abstraction_layers)
 
+if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME AND BUILD_TESTING)
+    if(BUILD_GREENTEA_TESTS)
+        add_subdirectory(TESTS)
+    endif()
+endif()

platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_MBED_PSA_SRV/TESTS/CMakeLists.txt

@@ -0,0 +1,4 @@
+# Copyright (c) 2021 Arm Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+add_subdirectory(attestation/test)

platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_MBED_PSA_SRV/TESTS/attestation/test/CMakeLists.txt

@@ -1,18 +1,17 @@
 # Copyright (c) 2021 ARM Limited. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-cmake_minimum_required(VERSION 3.19.0 FATAL_ERROR)
+include(mbed_greentea)
 
-set(MBED_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../../ CACHE INTERNAL "")
-set(TEST_TARGET mbed-platform-psa-attestation)
-
-include(${MBED_PATH}/tools/cmake/mbed_greentea.cmake)
-
-project(${TEST_TARGET})
+if(MBED_GREENTEA_TEST_BAREMETAL)
+    set(TEST_SKIPPED "RTOS required")
+endif()
 
 mbed_greentea_add_test(
     TEST_NAME 
-        ${TEST_TARGET}
+        mbed-platform-psa-attestation
     TEST_SOURCES
         main.cpp
+    TEST_SKIPPED
+        ${TEST_SKIPPED}
 )