[libc-commits] [libc] [libc] Add UEFI headers (PR #127126)

[Joseph Huber via libc-commits]

https://github.com/jhuber6 approved this pull request.

This is mostly copied from the standard listing as I understand, so it's mostly just putting  that through the LLVM libc interface. Hopefully the UEFI people at Google don't mind.

https://github.com/llvm/llvm-project/pull/127126