ARM: tegra: cardhu: register UARTC

UARTC is used for the interfacing with bluetooth device.
Register this UART channel as high speed serial channel
so that it can use the APB DMA for data transfer.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/tegra30-cardhu.dtsi

@@ -106,6 +106,15 @@
 				nvidia,slew-rate-rising = <1>;
 				nvidia,slew-rate-falling = <1>;
 			};
+			uart3_txd_pw6 {
+				nvidia,pins =	"uart3_txd_pw6",
+						"uart3_cts_n_pa1",
+						"uart3_rts_n_pc0",
+						"uart3_rxd_pw7";
+				nvidia,function = "uartc";
+				nvidia,pull = <0>;
+				nvidia,tristate = <0>;
+			};
 		};
 	};
 
@@ -114,6 +123,12 @@
 		clock-frequency = <408000000>;
 	};
 
+	serial@70006200 {
+		compatible = "nvidia,tegra30-hsuart";
+		status = "okay";
+		clock-frequency = <408000000>;
+	};
+
 	i2c@7000c000 {
 		status = "okay";
 		clock-frequency = <100000>;