drm/amdgpu: replace MCA macro with ACA for XGMI

use new ACA macro to instead of MCA

Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>