serial: mxc: Add match string for i.mx6 quad/dual lite serial

Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Tested-by: Hannes Schmelzer <oe5hpm@oevsv.at>

drivers/serial/serial_mxc.c

@@ -339,6 +339,7 @@ static int mxc_serial_ofdata_to_platdata(struct udevice *dev)
 static const struct udevice_id mxc_serial_ids[] = {
 	{ .compatible = "fsl,imx6ul-uart" },
 	{ .compatible = "fsl,imx7d-uart" },
+	{ .compatible = "fsl,imx6q-uart" },
 	{ }
 };
 #endif