[llvm] [AMDGPU][NFC] Templatise and roundtrip gfx11_asm_vop3_dpp16.s (PR #202721)

[Ivan Kosarev via llvm-commits]

kosarev wrote:

> Are you planning to make similar changes to other mc tests?

Yes, prioritising resolving the true16 delta and also converting same tests for other subtarget versions.

> I hope this won't be too bad in the merging process

I'm tracking differences between our branches preparing these changes, so there will be downstream patches where necessary.

https://github.com/llvm/llvm-project/pull/202721