[lld] [llvm] [RISCV] Support RISCV Atomics ABI attributes (PR #84597)

[Paul Kirth via llvm-commits]

ilovepi wrote:

@lukel97 Thanks for the report and @asb thanks for the reverts. 

It does look like we’ll need to wait for bfd to catch up or at least not crash. 

https://github.com/llvm/llvm-project/pull/84597