[llvm] [GISel][RISCV]Implement indirect parameter passing (PR #95429)

[Gábor Spaits via llvm-commits]

spaits wrote:

> > from the GlobalISel team (@s-barannikov )
> 
> FWIW I am not

Sorry for assuming. I thought that you are a GlobalISel team member, because you could help me with lots of stuff regarding it so you must understand the framework and its working very well.

https://github.com/llvm/llvm-project/pull/95429