drm/radeon/atpx: hybrid platforms use d3cold

The platform d3 cold is used to power down the dGPU.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_drv.c

@@ -409,7 +409,9 @@ static int radeon_pmops_runtime_suspend(struct device *dev)
 	pci_save_state(pdev);
 	pci_disable_device(pdev);
 	pci_ignore_hotplug(pdev);
-	if (radeon_has_atpx_dgpu_power_cntl())
+	if (radeon_is_atpx_hybrid())
+		pci_set_power_state(pdev, PCI_D3cold);
+	else if (radeon_has_atpx_dgpu_power_cntl())
 		pci_set_power_state(pdev, PCI_D3cold);
 	else
 		pci_set_power_state(pdev, PCI_D3hot);