Added license headers to verilog files

[jaromharris]

I added license headers to the verilog files due to the updated SymbiFlow/actions/checks that checks for license headers.

[jgoeders]

Hmm, this is failing because they are golden test files, and the output of fasm2bels isn't going to add the license header, so the files are no longer equal.

@mithro It probably doesn't make sense to have license headers on golden test files. Let me know if you feel otherwise.

@jaromharris https://github.com/SymbiFlow/actions/tree/main/checks says that:

Excluding files
Files can be excluded from the license checks using the exclude_license input.

Can you do that instead for these test files?

GitHub

SymbiFlow/actions

GitHub Actions to be reused in CI workflows. Contribute to SymbiFlow/actions development by creating an account on GitHub.

[mithro]

@jgoeders -- We should probably mark the files as generated using linguist - f4pga/actions#27 which is pending on github-linguist/linguist#5382

[jgoeders]

@jaromharris Sorry, you probably didn't see mithro's comment. Rather than updating ci.yml, can you instead mark the files as generated: https://github.com/github/linguist/blob/master/docs/overrides.md#generated-code, then hopefully SymbiFlow/actions/checks will be updated soon to automatically not check these.

GitHub

github/linguist

Language Savant. If your repository's language is being reported incorrectly, send us a pull request! - github/linguist

[jaromharris]

Can you let me know that I did that correctly?

[jgoeders]

This looks good. You could do it by wildcard, but there aren't too many files, and for license exceptions, it's perhaps better to spell them out individually.