[clang] [llvm] [NVPTX][clang] Add unsigned scoped atomic min/max intrinsics. (PR #200735)

[Alex MacLean via cfe-commits]

AlexMaclean wrote:

I think thanks to some recent work by @akshayrdeodhar this family of intrinsics is redundant and should probably be completely removed and auto-upgrade to the `atomicrmw` instruction. https://godbolt.org/z/5P49rfe8T. I think we should not introduce more intrinsics in this set. 

https://github.com/llvm/llvm-project/pull/200735