[nrf noup] doc: extensions: kconfig: Add SoC/board sysbuild Kconfigs

Allows listing sysbuild Kconfigs for boards and SoCs

Signed-off-by: Jamie McCrae <[email protected]>

Author: nordicjm

doc/_extensions/zephyr/kconfig/__init__.py

@@ -105,6 +105,7 @@ def kconfig_load(app: Sphinx) -> tuple[kconfiglib.Kconfig, kconfiglib.Kconfig, d
         with open(Path(td) / "soc" / "Kconfig.soc", "w") as f:
             for folder in soc_folders:
                 f.write('source "' + (Path(folder) / 'Kconfig.soc').as_posix() + '"\n')
+                f.write('osource "' + (Path(folder) / 'Kconfig.sysbuild').as_posix() + '"\n')
 
         with open(Path(td) / "soc" / "Kconfig", "w") as f:
             for folder in soc_folders:
@@ -130,6 +131,12 @@ def kconfig_load(app: Sphinx) -> tuple[kconfiglib.Kconfig, kconfiglib.Kconfig, d
                 board_str = 'BOARD_' + re.sub(r"[^a-zA-Z0-9_]", "_", board.name).upper()
                 f.write('config  ' + board_str + '\n')
                 f.write('\t bool\n')
+
+                if board.vendor == "nordic" and os.path.isfile(board.dir / 'Kconfig.sysbuild'):
+                    f.write('if ' + board_str + '\n')
+                    f.write('source "' + (board.dir / 'Kconfig.sysbuild').as_posix() + '"\n')
+                    f.write('endifif\n')
+
                 for qualifier in list_boards.board_v2_qualifiers(board):
                     board_str = 'BOARD_' + re.sub(r"[^a-zA-Z0-9_]", "_", qualifier).upper()
                     f.write('config  ' + board_str + '\n')