ARM: dts: sun8i: tbs-a711: Enable bluetooth

TBS A711 tablet has a bcm20702a1 bluetooth chip (part of AP6210 WiFi/BT
module) connected to UART1. Add node for the blutooth chip.

The driver needs brcm/BCM20702A1.hcd firmware file to run.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts

@@ -406,7 +406,20 @@ &uart0 {
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
+	uart-has-rtscts;
 	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm20702a1";
+		clocks = <&ac100_rtc 1>;
+		clock-names = "lpo";
+		vbat-supply = <&reg_vbat>;
+		vddio-supply = <&reg_dldo1>;
+		device-wakeup-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
+		host-wakeup-gpios = <&r_pio 0 5 GPIO_ACTIVE_HIGH>; /* PL5 */
+		shutdown-gpios = <&r_pio 0 4 GPIO_ACTIVE_HIGH>; /* PL4 */
+		max-speed = <1500000>;
+	};
 };
 
 &usb_otg {