[llvm] [RISCV] Allow large div peephole optimization for minsize (PR #163679)

[via llvm-commits]

kvpanch wrote:

> > @topperc if that looks good now, can you please merge it ?
> 
> Can you provide an email address per LLVM Developer Policy? https://llvm.org/docs/DeveloperPolicy.html#email-addresses

ops. Added.

https://github.com/llvm/llvm-project/pull/163679