drm/amdgpu: enable mode2 reset for SMU IP v14.0.4

Set the default reset method to mode2 for SMU 14.0.4.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>