cmake: Add MBEDTLS_FRAMEWORK_DIR

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 4a42efe..5b68503 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -21,7 +21,7 @@
 execute_process(
     COMMAND
         ${MBEDTLS_PYTHON_EXECUTABLE}
-        ${CMAKE_CURRENT_SOURCE_DIR}/../framework/scripts/generate_config_tests.py
+        ${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_config_tests.py
         --list-for-cmake
     WORKING_DIRECTORY
         ${CMAKE_CURRENT_SOURCE_DIR}/..
@@ -55,11 +55,11 @@
             ${CMAKE_CURRENT_SOURCE_DIR}/..
         COMMAND
             ${MBEDTLS_PYTHON_EXECUTABLE}
-            ${CMAKE_CURRENT_SOURCE_DIR}/../framework/scripts/generate_config_tests.py
+            ${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_config_tests.py
             --directory ${CMAKE_CURRENT_BINARY_DIR}/suites
             ${config_generated_data_files}
         DEPENDS
-            ${CMAKE_CURRENT_SOURCE_DIR}/../framework/scripts/generate_config_tests.py
+            ${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_config_tests.py
             # Do not declare the configuration files as dependencies: they
             # change too often in ways that don't affect the result
             # ((un)commenting some options).
@@ -140,7 +140,7 @@
             test_suite_${data_name}.c
         COMMAND
             ${MBEDTLS_PYTHON_EXECUTABLE}
-            ${CMAKE_CURRENT_SOURCE_DIR}/../framework/scripts/generate_test_code.py
+            ${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_test_code.py
             -f ${CMAKE_CURRENT_SOURCE_DIR}/suites/test_suite_${suite_name}.function
             -d ${data_file}
             -t ${CMAKE_CURRENT_SOURCE_DIR}/../tf-psa-crypto/tests/suites/main_test.function
@@ -149,7 +149,7 @@
             --helpers-file ${CMAKE_CURRENT_SOURCE_DIR}/../tf-psa-crypto/tests/suites/helpers.function
             -o .
         DEPENDS
-            ${CMAKE_CURRENT_SOURCE_DIR}/../framework/scripts/generate_test_code.py
+            ${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_test_code.py
             ${CMAKE_CURRENT_SOURCE_DIR}/suites/test_suite_${suite_name}.function
             ${data_file}
             ${CMAKE_CURRENT_SOURCE_DIR}/../tf-psa-crypto/tests/suites/main_test.function