[lld] Reapply "[lld] Support thumb PLTs" (#93631) (PR #93644)

[via llvm-commits]

PiJoules wrote:

> > This reverts commit [7832769](https://github.com/llvm/llvm-project/commit/7832769d329ead264aff238c06dce086b3a74922).
> > This was reverted prior due to a test failure on the windows builder. I think this was because we didn't specify the triple and assumed windows. The other tests use the full triple specifying linux, so we follow suite here.
> 
> Suggest that the relanded patch contains the full description. You can add brief words what has changed from the first attempt.

Re-added the initial description. Will re-land once I re-assert the windows build passes.

https://github.com/llvm/llvm-project/pull/93644