[llvm] [AMDGPU][MC] Fix disassembler problem for image_atomic with TFE (PR #112622)

[Mirko Brkušanin via llvm-commits]

mbrkusanin wrote:

There is still this issue with inconsistent naming for Vx where x would match the size of vdata. Currently it is:

`IMAGE_ATOMIC_CMPSWAP_V1_*` has VReg_64
`IMAGE_ATOMIC_CMPSWAP_V2_*` has VReg_128
`IMAGE_ATOMIC_CMPSWAP_V3_*` has VReg_96
`IMAGE_ATOMIC_CMPSWAP_V4_*` has VReg_160

https://github.com/llvm/llvm-project/pull/112622