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

[Craig Topper via llvm-commits]

topperc wrote:

I have added support for 48-bit instructions using chunks of 16-bits values. This matches GNU objdump.

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