[lld] [LLD] [MinGW] Respect the -S/-s options when writing PDB files (PR #75181)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

Does anyone want to comment on this one - @ZequanWu? (I think the rest of the patchset is approved so far, and this is the remaining bit that actually uses it.)

https://github.com/llvm/llvm-project/pull/75181