Add framework_path module

This allows scripts in the scripts/ directory to get the path to the
mbedtls_framework module in framework/scripts/

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/scripts/code_size_compare.py b/scripts/code_size_compare.py
index eefda31..4dede0f 100755
--- a/scripts/code_size_compare.py
+++ b/scripts/code_size_compare.py
@@ -21,6 +21,7 @@
 import typing
 from enum import Enum
 
+import framework_path # pylint: disable=unused-import
 from mbedtls_framework import build_tree
 from mbedtls_framework import logging_util
 from mbedtls_framework import typing_util