[lld] [llvm] [RISCV] Add an instruction PrettyPrinter to llvm-objdump (PR #90093)

[Ana Pazos via llvm-commits]

apazos wrote:

Hi Craig, thanks for quickly pushing this patch. 

I think we need to handle instructions of any size multiple of 16 bits. We might get some 48 bit instructions in the future.

It looks like the current code handles 16 and 32 bit instructions.

https://github.com/llvm/llvm-project/pull/90093