Add LINK_STATE_* definitions to NetBSD and OpenBSD.

[pusateri]

Description

Add missing interface LINK_STATE_* definitions from sys/net/if.h

Sources

https://github.com/NetBSD/src/blob/54613ac4db31045d0ca58a7e2da7af005c6b5cd2/sys/net/if.h#L207
https://github.com/openbsd/src/blob/bac4ed8757bbe68d4cac117487958588ae27e7c2/sys/net/if.h#L135

Checklist

• [ x] Relevant tests in libc-test/semver have been updated
• [x ] No placeholder or unstable values like *LAST or *MAX are
  included (see #3131)
• [ x] Tested locally (cd libc-test && cargo test --target mytarget);
  especially relevant for platforms that may not be checked in CI

[rustbot]

Some changes occurred in OpenBSD module

cc @semarie

[semarie]

LGTM. tests are passing on OpenBSD.

[JohnTitor]

Thanks!

[tgross35]

Could you turn the doc comments into regular comments to match the others? Usually we don't add user-facing docs in this crate, instead preferring if the user refers to the manpages.

Also the comments should be permalinks, otherwise they'll wind up getting out of date. On the GH UI you can do this by clicking the triple dots in the top right then "copy permalink".

[tgross35]

@pusateri gentle ping, just a few tiny updates and a rebase needed here :)

[rustbot]

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

[pusateri]

Sorry, somehow I wasn't getting notifications on this. I have updated the branch with the changes you ask for.

[tgross35]

LGTM but please squash