arm64: dts: tegra: smaug: Add Bluetooth node

The Google Pixel C contains a BRCM4354 Wi-Fi + BT module.
Add a DT node for its BT functionality. Tested on Pixel C.
Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra210-smaug.dts

@@ -17,6 +17,7 @@ / {
 
 	aliases {
 		serial0 = &uarta;
+		serial3 = &uartd;
 	};
 
 	chosen {
@@ -1309,6 +1310,22 @@ serial@70006000 {
 		status = "okay";
 	};
 
+	uartd: serial@70006300 {
+		compatible = "nvidia,tegra30-hsuart";
+		status = "okay";
+
+		bluetooth {
+			compatible = "brcm,bcm43540-bt";
+			max-speed = <4000000>;
+			brcm,bt-pcm-int-params = [01 02 00 01 01];
+			device-wakeup-gpios = <&gpio TEGRA_GPIO(H, 3) GPIO_ACTIVE_HIGH>;
+			shutdown-gpios = <&gpio TEGRA_GPIO(H, 4) GPIO_ACTIVE_HIGH>;
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(H, 5) IRQ_TYPE_LEVEL_LOW>;
+			interrupt-names = "host-wakeup";
+		};
+	};
+
 	i2c@7000c400 {
 		status = "okay";
 		clock-frequency = <1000000>;