[llvm] [RISCV] Correct the predicate for the ror and rorw with immediate InstAliases. (PR #157921)

[Craig Topper via llvm-commits]

topperc wrote:

> LGTM
> 
> Possibly followup: Is there a way in tablegen to derive a predicate from another instruction? That is, say "the predicate for the alias is whatever the predicate for RORI is"?

Not that I'm aware of.

https://github.com/llvm/llvm-project/pull/157921