ARM: dts: palmetto: Enable rear UART

The Palmetto BMC has a UART connected to a RS-232 transceiver designed
to be used as a serial console for the host processor. It appears as a
D-sub connector on the back of the chassis.
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-opp-palmetto.dts

@@ -82,6 +82,21 @@ &pinctrl_vgahs_default &pinctrl_vgavs_default
 			&pinctrl_ddcclk_default &pinctrl_ddcdat_default>;
 };
 
+&uart1 {
+	/* Rear RS-232 connector */
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_txd1_default
+			&pinctrl_rxd1_default
+			&pinctrl_nrts1_default
+			&pinctrl_ndtr1_default
+			&pinctrl_ndsr1_default
+			&pinctrl_ncts1_default
+			&pinctrl_ndcd1_default
+			&pinctrl_nri1_default>;
+};
+
 &uart5 {
 	status = "okay";
 };