scripts: ci: check_compliance: Add sysbuild Kconfig exclusions

Adds some Kconfigs to the allow list which are used for
demonstration purposes in sysbuild documentation

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

Author: nordicjm

scripts/ci/check_compliance.py

@@ -1182,6 +1182,9 @@ class SysbuildKconfigCheck(KconfigCheck):
     UNDEF_KCONFIG_ALLOWLIST = {
         # zephyr-keep-sorted-start re(^\s+")
         "FOO",
+        "MY_IMAGE", # Used in sysbuild documentation as example
+        "OTHER_APP_IMAGE_NAME", # Used in sysbuild documentation as example
+        "OTHER_APP_IMAGE_PATH", # Used in sysbuild documentation as example
         "SECOND_SAMPLE", # Used in sysbuild documentation
         "SUIT_ENVELOPE", # Used by nRF runners to program provisioning data
         "SUIT_MPI_APP_AREA_PATH", # Used by nRF runners to program provisioning data