Add stable-rc v6.9 CI support
## Issue description Add stable-rc v6.9 CI support ## Useful links * https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci * https://gitlab.com/cip-project/cip-kernel/cip-kernel-config * https://gitlab.com/cip-project/cip-testing/linux-cip-pipelines
issue