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

[Wang Pengcheng via llvm-commits]

wangpc-pp wrote:

> > LGTM! One question: is this behavior the same as current GNU toolchain?
> 
> Yes, GNU objdump print the immediates in hexadecimal format by default, and the llvm-objdump will do so with this patch. :)

Then I have no question now, please go ahead and merge this PR. :-)

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