Update references to mbedtls_dev

Change these to point to the new mbedtls_framework module in the
framework submodule.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/tests/scripts/generate_psa_wrappers.py b/tests/scripts/generate_psa_wrappers.py
index 07d1450..500693b 100755
--- a/tests/scripts/generate_psa_wrappers.py
+++ b/tests/scripts/generate_psa_wrappers.py
@@ -15,10 +15,10 @@
 from typing import Iterator, List, Optional, Tuple
 
 import scripts_path #pylint: disable=unused-import
-from mbedtls_dev import build_tree
-from mbedtls_dev import c_parsing_helper
-from mbedtls_dev import c_wrapper_generator
-from mbedtls_dev import typing_util
+from mbedtls_framework import build_tree
+from mbedtls_framework import c_parsing_helper
+from mbedtls_framework import c_wrapper_generator
+from mbedtls_framework import typing_util
 
 
 class BufferParameter: