r600: Use unified atomics
Lightly tested because I don't have hardware. Confirmed that dEQP-GLES31.functional.*atomic*
doesn't crash under drm-shim, at least, and selected dEQP tests generate identical assembly. So should be good to go.
Lightly tested because I don't have hardware. Confirmed that dEQP-GLES31.functional.*atomic*
doesn't crash under drm-shim, at least, and selected dEQP tests generate identical assembly. So should be good to go.