drm/amdgpu: Remove the direct fw loading support for sdma2.4

sdma2.4 is only for iceland. For Vi, we don't maintain the
direct fw loading.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed