[llvm] [RISCV] Make Za64rs imply Za128rs (PR #206638)

[Pengcheng Wang via llvm-commits]

wangpc-pp wrote:

> How to rerun the CI-checks? It seems the failures actually have nothing to do with RISC-V or the current changes.

You may rebase/merge on the latest main branch and then push.

https://github.com/llvm/llvm-project/pull/206638