[AMDGPU][MC] Invalid disassembly of image_atomic instructions with tfe

[dpreobra]

Bugzilla Link	48847
Version	trunk
OS	All

Extended Description

image_atomic instructions with tfe cannot be properly decoded. Disassembler unable to identify correct dst size.

An example for GFX9:

0x00,0x03,0x49,0xf0,0xfc,0x05,0x17,0x00

Expected output:

image_atomic_add v[5:7], v252, s[92:99] dmask:0x3 tfe

Actual result:

image_atomic_add v5, v252, s[92:99] dmask:0x3 tfe