[llvm] [NVPTX] Refactor intrinsic definitions with loops and classes to remove redundancy (NFC) (PR #139611)

[Artem Belevich via llvm-commits]

https://github.com/Artem-B approved this pull request.

1500 lines of tablegen gone while making the file more readable is a very nice cleanup.

https://github.com/llvm/llvm-project/pull/139611