cmake: modules: using posix path for Kconfig generated file

Fixes: #15289

Kconfig requires posix style path when sourcing other files.
As abspath in python will use native host style, i.e. backslash '\' in
windows this will cause invalid paths in Kconfig generated file and
thus the file will never be loaded.

This commit uses PurePath to convert the path to posix style, ensuring
Kconfig can load the modules.

Signed-off-by: Torsten Rasmussen <[email protected]>

Author: tejlmand

scripts/zephyr_module.py

@@ -19,7 +19,7 @@
 import pykwalify.core
 import subprocess
 import re
-
+from pathlib import PurePath
 
 METADATA_SCHEMA = '''
 ## A pykwalify schema for basic validation of the structure of a
@@ -91,12 +91,13 @@ def process_module(module, cmake_out=None, kconfig_out=None):
     cmake_file = os.path.join(cmake_path, 'CMakeLists.txt')
     if os.path.isfile(cmake_file) and cmake_out is not None:
         cmake_out.write('\"{}\":\"{}\"\n'.format(os.path.basename(module),
-                                         os.path.abspath(cmake_path)))
+                                                 os.path.abspath(cmake_path)))
 
     kconfig_file = os.path.join(module, kconfig_setting or 'zephyr/Kconfig')
     if os.path.isfile(kconfig_file) and kconfig_out is not None:
         kconfig_out.write('osource "{}"\n\n'
-                          .format(os.path.abspath(kconfig_file)))
+                          .format(PurePath(
+                              os.path.abspath(kconfig_file)).as_posix()))
 
 
 def main():