tty/serial: Add devicetree support for nVidia Tegra serial ports

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index dbfbfda..e58cece 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -181,6 +181,7 @@
 	{ .compatible = "ns16550",  .data = (void *)PORT_16550, },
 	{ .compatible = "ns16750",  .data = (void *)PORT_16750, },
 	{ .compatible = "ns16850",  .data = (void *)PORT_16850, },
+	{ .compatible = "nvidia,tegra20-uart", .data = (void *)PORT_TEGRA, },
 #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
 	{ .compatible = "ibm,qpace-nwp-serial",
 		.data = (void *)PORT_NWPSERIAL, },