[libc] [llvm] [libc] Move generated elf header to include (PR #211428)

[Louis Dionne via llvm-commits]

ldionne wrote:

Is it possible that this change broke the LLVM-libc configuration of libc++: https://github.com/llvm/llvm-project/actions/runs/30738598827/job/91475999571?pr=213512 ?



https://github.com/llvm/llvm-project/pull/211428