[llvm] [RISCV] Fix typo in CV_SH_rr_inc pattern (PR #120246)

[Craig Topper via llvm-commits]

topperc wrote:

I just posted https://github.com/llvm/llvm-project/pull/120286 which I think removes the need to test MIR for this.

https://github.com/llvm/llvm-project/pull/120246