[lld] [lld] Add ability to have OUTPUT_FORMAT(binary) in linker script for ld.lld (PR #97765)

[via llvm-commits]

droptopx wrote:

> This needs a test in `oformat-binary.s`. A different `OUTPUT_FORMAT` might change `oFormatBinary` to false.

Okay, I want to write test(s) for this but I'm not sure what we need to be testing for here. Why would we want to test for the behaviors of `OUTPUT_FORMAT`s other than `binary`? This PR only changes the behavior of `OUTPUT_FORMAT(binary)`.

Is the test for the case where there are more than one `OUTPUT_FORMAT` directives present in a single file? Does that even make sense for a linker script?

https://github.com/llvm/llvm-project/pull/97765