[llvm] [NVPTX] Use appropriate operands in ReplaceImageHandles (NFC) (PR #127898)

[Artem Belevich via llvm-commits]

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

LGTM.

I'm not quite sure if anybody is even using texture/surface lookups. I think I've only ran into two cases where someone wanted to compile CUDA code using textures, and in both cases the source code was ancient, from around Fermi/sm_20 times. 

https://github.com/llvm/llvm-project/pull/127898