drm/amdgpu: update gfx 9.4.2 ras error reporting

only output ras error status if an error bit is set or error counter is set

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>