[libc-commits] [libc] [libc][docs] Add net/if.h documentation by referring to POSIX standards (PR #122406)

[Nick Desaulniers via libc-commits]

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

Looks great! Thanks. Need us to merge this for you?

https://github.com/llvm/llvm-project/pull/122406