openbsd_network: New additions for rtl8125.

Change-Id: Id2b2b58e8fe69b5b758ccd8161adcedd7ecaf717
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6041
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>