[U-Boot] GitLab: make pipeline status public

[Heinrich Schuchardt]

Hello Harald,

Tom suggested you could help on this issue.

I suggest that the pipeline status should be public on all custodian
gits, e.g. page
https://gitlab.denx.de/u-boot/custodians/u-boot-efi/pipelines.

I set the flag "Public pipelines" in the CI settings but this seems not
be sufficient. I still get a 404 error code if I am not logged on.

Best regards

Heinrich