Sometimes the Github plugin for CI runs shows a linux-ppc and a ppc-linux. linux-ppc seems to cover pLinux-BE and pLinux-LE, and ppc-linux seems to only cover pLinux-LE. If both pass, only the ppc-linux tag is shown.
I assume this is something that is configured in the jobs, but as I can't see the configuration I can't confirm.

Example of a job with both: nodejs/node#10318
cc/ @sam-github