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>
diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
index 4f1f822..e586c18 100644
--- a/drivers/serial/serial_mxc.c
+++ b/drivers/serial/serial_mxc.c
@@ -339,6 +339,7 @@
 static const struct udevice_id mxc_serial_ids[] = {
 	{ .compatible = "fsl,imx6ul-uart" },
 	{ .compatible = "fsl,imx7d-uart" },
+	{ .compatible = "fsl,imx6q-uart" },
 	{ }
 };
 #endif