drm/amd/powerplay: correct the argument for PPSMC_MSG_SetUclkFastSwitch

The argument was set wrongly. Fast/slow switch was asked when there is
actually a slow/fast switch needed.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c

@@ -1839,7 +1839,7 @@ static int vega20_notify_smc_display_change(struct pp_hwmgr *hwmgr,
 	if (data->smu_features[GNLD_DPM_UCLK].enabled)
 		return smum_send_msg_to_smc_with_parameter(hwmgr,
 			PPSMC_MSG_SetUclkFastSwitch,
-			has_disp ? 0 : 1);
+			has_disp ? 1 : 0);
 
 	return 0;
 }