arm64: dts: exynos: Add Bluetooth chip to TM2(e) boards

TM2(e) boards have a Broadcom Bluetooth chip connected to 3rd UART port.
Add a device tree node describing it and its resources (control GPIO lines
and clock).
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi

@@ -1202,6 +1202,20 @@ &serial_1 {
 	status = "okay";
 };
 
+&serial_3 {
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		max-speed = <3000000>;
+		shutdown-gpios = <&gpd4 0 GPIO_ACTIVE_HIGH>;
+		device-wakeup-gpios = <&gpr3 7 GPIO_ACTIVE_HIGH>;
+		host-wakeup-gpios = <&gpa2 2 GPIO_ACTIVE_HIGH>;
+		clocks = <&s2mps13_osc S2MPS11_CLK_BT>;
+		clock-names = "extclk";
+	};
+};
+
 &spi_1 {
 	cs-gpios = <&gpd6 3 GPIO_ACTIVE_HIGH>;
 	status = "okay";