enic: driver update from v6.3

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2101496

This enic driver update is mostly just cleanups.
The only user-observable change should be from the patch "enic: Use irq_update_affinity_hint()".

Signed-off-by: Michal Schmidt mschmidt@redhat.com