[lld] [llvm] [RISCV] Support printing immediate of RISCV MCInst in hexadecimal format (PR #74053)

[Jessica Clarke via llvm-commits]

jrtc27 wrote:

Note that this makes clang -S inconsistent with llvm-objdump -d; the former continues to use friendly decimal for things, whilst the latter uses hex, which isn't so user-friendly and feels rather against the spirit of disassembling things to look as close to human assembly as possible.

https://github.com/llvm/llvm-project/pull/74053