[llvm] [gold] Use ld.bfd for tests (PR #130981)

[Teresa Johnson via llvm-commits]

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

lgtm

For the cases that are not supported by ld.bfd (e.g. --start-lib), what should be the longer term plan? Do we want to delete these tests, or should an issue be opened with ld.bfd to support them?

https://github.com/llvm/llvm-project/pull/130981