si-standard-link: fix aux channels links

AUX channels can link to any other channel but when AUX channels are
linked, they must match exactly.

Fixes some issues with split devices with aux channels.
6 jobs for aux-link-check in 3 minutes and 10 seconds (queued for 53 seconds)
Status Name Job ID Coverage
  Container
passed container_fedora #14739401

00:00:53

passed container_ubuntu #14739402

00:00:28

 
  Build
passed build_on_fedora_no_docs #14739404

00:00:47

passed build_on_fedora_with_docs #14739403

00:00:54

passed build_on_ubuntu_no_gir #14739406

00:00:39

passed build_on_ubuntu_with_gir #14739405

00:01:48