[llvm] [Patchpoint] Add immarg attributes to patchpoint arguments (PR #97276)

[Csanád Hajdú via llvm-commits]

Il-Capitano wrote:

@fmayer You must have been on a blame list for some unrelated change in `llvm/include/llvm/IR/Intrinsics.td`. Sorry for the confusion, and thanks for taking the time anyways.

https://github.com/llvm/llvm-project/pull/97276