[libc-commits] [libc] [libc] Move baremetal write_to_stderr implementation to io.cpp (PR #86890)

[Joseph Huber via libc-commits]

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

Sorry, on second thought it's probably not required. The other targets use inline implementations of stuff like `syscall`. I'm okay with either one. I was confusing this with `quick_exit` which does implementation files more consistently.

https://github.com/llvm/llvm-project/pull/86890