[llvm] [RISCV] Zabha/Zacas implies Zaamo (PR #115694)

[Michael Maitland via llvm-commits]

michaelmaitland wrote:

There was some related discussion at https://github.com/rust-lang/rust/pull/130877#issuecomment-2379423609. Will this cause a problem with compatibility with older versions of binutils?

https://github.com/llvm/llvm-project/pull/115694