[nrf noup] scripts: ci: check_compliance: Exclude BM docs

nrf-squash! [nrf noup] scripts: ci: check_compliance: Exclude some docs

Excludes bare metal release docs from the invalid Kconfig check as
these will have old Kconfigs that have been removed

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

Author: nordicjm

scripts/ci/check_compliance.py

@@ -1232,6 +1232,7 @@ def check_no_undef_outside_kconfig(self, kconf):
                           ":!/doc/nrf/releases_and_maturity",
                           ":!/doc/nrf/libraries/bin/lwm2m_carrier/CHANGELOG.rst",
                           ":!/doc/nrf/app_dev/device_guides/nrf70/wifi_advanced_security_modes.rst",
+                          ":!/doc/nrf-bm/release_notes",
                           cwd=GIT_TOP)
 
         # splitlines() supports various line terminators