drm/nouveau: Don't poll LVDS outputs.

Reported-by: NXavier Chantry <chantry.xavier@gmail.com>
Signed-off-by: NFrancisco Jerez <currojerez@riseup.net>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -888,10 +888,12 @@ nouveau_connector_create(struct drm_device *dev, int index)
 				nv_connector->use_dithering ?
 				DRM_MODE_DITHERING_ON : DRM_MODE_DITHERING_OFF);
 
+		if (dcb->type != DCB_CONNECTOR_LVDS) {
 			if (dev_priv->card_type >= NV_50)
 				connector->polled = DRM_CONNECTOR_POLL_HPD;
 			else
 				connector->polled = DRM_CONNECTOR_POLL_CONNECT;
+		}
 		break;
 	}