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

[Fangrui Song via llvm-commits]

MaskRay wrote:

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

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