[clang] [lld] [Clang][MinGW] Pass --functionpadmin to the linker when -fms-hotpatch is used (PR #116512)

[Martin Storsjö via cfe-commits]

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

This looks reasonable.

Is this something that GCC doesn't have? IIRC they do have some support for hotpatchability in some way - can you briefly summarize what they have and what we have in common and what differs?

https://github.com/llvm/llvm-project/pull/116512