[llvm] [NVPTX] Add commutativity to SETP instructions to enable MachineCSE of inverted predicates (PR #191890)

[via llvm-commits]

modiking wrote:

ping @arsenm. Current state is with the original `switch` based implementation. Alex suggested having that be a separate NFC and the tablegen based setup can be seen with the previous commit

https://github.com/llvm/llvm-project/pull/191890