doc: kconfig: Add extra module paths

Adds ZEPHYR_NRF_KCONFIG and SYSBUILD_NRF_KCONFIG variables

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

Author: nordicjm

doc/kconfig/conf.py

@@ -66,7 +66,15 @@
     / "memfault-firmware-sdk"
     / "Kconfig"
 )
-
+os.environ["ZEPHYR_NRF_KCONFIG"] = str(
+    NRF_BASE
+    / "Kconfig.nrf"
+)
+os.environ["SYSBUILD_NRF_KCONFIG"] = str(
+    NRF_BASE
+    / "sysbuild"
+    / "Kconfig.sysbuild"
+)
 
 def setup(app):
     app.add_css_file("css/kconfig.css")