[llvm-branch-commits] [lld] ReleaseNotes: add lld/ELF notes (PR #80393)

[Fangrui Song via llvm-branch-commits]

MaskRay wrote:

"""
Merging is blocked
The base branch does not allow updates. [Learn more about protected branches.](https://docs.github.com/articles/about-protected-branches/)
"""

Once this is approved, @tstellar I think I'll notify you to merge this into `release/18.x`?

https://github.com/llvm/llvm-project/pull/80393