ARM: dts: vf610-twr: Add ttyLP2 device.

The ttyLP1 is already the default console/serial port.  The
tower board will route ttyLP2 to the same connectors depending
on the JP23/24 settings.

See:
 http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/276457.html
 http://lists.infradead.org/pipermail/linux-arm-kernel/2014-July/275576.htmlSigned-off-by: NBill Pringlemeir <bpringlemeir@nbsps.com>
Acked-by: NStefan Agner <stefan@agner.ch>
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>

arch/arm/boot/dts/vf610-twr.dts

@@ -220,8 +220,6 @@
 				VF610_PAD_PTB1__FTM0_CH1		0x1582
 				VF610_PAD_PTB2__FTM0_CH2		0x1582
 				VF610_PAD_PTB3__FTM0_CH3		0x1582
-				VF610_PAD_PTB6__FTM0_CH6		0x1582
-				VF610_PAD_PTB7__FTM0_CH7		0x1582
 			>;
 		};
 
@@ -243,6 +241,13 @@
 				VF610_PAD_PTB5__UART1_RX		0x21a1
 			>;
 		};
+
+		pinctrl_uart2: uart2grp {
+			fsl,pins = <
+				VF610_PAD_PTB6__UART2_TX		0x21a2
+				VF610_PAD_PTB7__UART2_RX		0x21a1
+			>;
+		};
 	};
 };
 
@@ -264,3 +269,9 @@
 	pinctrl-0 = <&pinctrl_uart1>;
 	status = "okay";
 };
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	status = "okay";
+};