drm/amdgpu: Add mode-2 reset in SMU v13.0.6

Modifications to mode-2 reset flow for SMU v13.0.6 ASICs.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Le Ma <le.ma@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>