Add contents of linux/can/bcm.h

[coolreader18]

Description

There's already can::{raw, j1939}, and this adds bcm.

Sources

https://github.com/torvalds/linux/blob/b320789d6883cc00ac78ce83bccbfe7ed58afcf0/include/uapi/linux/can/bcm.h

Checklist

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

@rustbot label +stable-nominated

[coolreader18]

@rustbot label -S-waiting-on-author +S-waiting-on-review

[tgross35]

Hey, sorry for the delay here. I wanted to require making it explicit that the enum should be anonymous, so I just went ahead and merged that in 02c4d66. Would you be able to update using #anon?

@rustbot author

[rustbot]

Reminder, once the PR becomes ready for a review, use @rustbot ready.

[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.

[coolreader18]

@rustbot ready

[tgross35]

One nit but LGTM. Could you please squash the commits?

[tgross35]

Thank you!