[llvm] AMDGPU: Make s_wait_samplecnt(_bvhcnt) dependent on hasImageInsts, NFC (PR #83932)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> This is really stretching the definition of "image instruction", but I guess it's OK.

I don't see how it makes sense at all?

https://github.com/llvm/llvm-project/pull/83932