[nrf noup] scripts: ci: check_compliance: Add NCS sysbuild Kconfig

nrf-squash! [nrf noup] scripts: ci: check_compliance: Add NCS sysbuild Kconfigs

Adds a Kconfig to the allow list as it is used in documentation but
is not defined

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

Author: nordicjm

scripts/ci/check_compliance.py

@@ -1253,6 +1253,7 @@ class SysbuildKconfigCheck(KconfigCheck):
         "DTM_NO_DFE", # Used by DTM application
         "DTM_TRANSPORT_HCI", # Used by DTM application
         "INCLUDE_REMOTE_IMAGE", # Used by machine learning application
+        "MCUBOOT_FPROTECT_ALLOW_COMBINED_REGIONS", # Used in migration documentation
         "ML_APP_INCLUDE_REMOTE_IMAGE", # Used by machine learning application
         "ML_APP_REMOTE_BOARD", # Used by machine learning application
         "MY_APP_IMAGE_ABC", # Used in documentation