video: rockchip: dw_mipi_dsi: Proceed when external PHY is not defined

In this case the DM returns ENOENT, not ENODATA.

Signed-off-by: Ondrej Jirman <megi@xff.cz>

drivers/video/rockchip/dw_mipi_dsi_rockchip.c

@@ -839,7 +839,7 @@ static int dw_mipi_dsi_rockchip_probe(struct udevice *dev)
 	 * NULL if it's not initialized.
 	 */
 	ret = generic_phy_get_by_name(dev, "dphy", &priv->phy);
-	if (ret && ret != -ENODATA) {
+	if (ret && ret != -ENOENT) {
 		dev_err(dev, "failed to get mipi dphy: %d\n", ret);
 		return ret;
 	}