[lld] [X86, lld] Handle relocation R_X86_64_REX2_GOTPCRELX (PR #109783)

[Shengchen Kan via llvm-commits]

KanRobert wrote:

> Since llvm does not add `R_X86_64_CODE_4_GOTPCRELX`, it should be removed from the description .

Done

https://github.com/llvm/llvm-project/pull/109783