add vega20_notify_smc_display_config functions to
support sys interface for SMU11.
Signed-off-by: NChengming Gui <Jack.Gui@amd.com>
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>