[lld] [LLD] Implement --enable-non-contiguous-regions (PR #90007)

[Peter Smith via llvm-commits]

https://github.com/smithp35 commented:

Thanks very much for the update. Only a few small comments on the tests.

I definitely would like to see this feature added as the equivalent feature in Arm's proprietary toolchain has been widely used. Given that the equivalent GNU ld feature is new, I don't think we'll see existing widespread use but I think it could pick up in the future.  

https://github.com/llvm/llvm-project/pull/90007