ARM: dts: imx7s-warp: Add Bluetooth support

WaRP7 has a BCM43430 Bluetooth chip.

Add support for it.
Signed-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx7s-warp.dts

@@ -79,6 +79,18 @@ reg_brcm: regulator-brcm {
 		startup-delay-us = <200000>;
 	};
 
+	reg_bt: regulator-bt {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_bt_reg>;
+		enable-active-high;
+		gpio = <&gpio5 17 GPIO_ACTIVE_HIGH>;
+		regulator-name = "bt_reg";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "imx7-sgtl5000";
@@ -250,6 +262,15 @@ &uart1 {
 	status = "okay";
 };
 
+&uart3  {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart3>;
+	assigned-clocks = <&clks IMX7D_UART3_ROOT_SRC>;
+	assigned-clock-parents = <&clks IMX7D_PLL_SYS_MAIN_240M_CLK>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
 &usbotg1 {
 	dr_mode = "peripheral";
 	status = "okay";
@@ -293,6 +314,12 @@ MX7D_PAD_SD2_WP__GPIO5_IO10	0x14 /* WL_REG_ON */
 		>;
 	};
 
+	pinctrl_bt_reg: btreggrp {
+		fsl,pins = <
+			MX7D_PAD_SD2_DATA3__GPIO5_IO17	0x14 /* BT_REG_ON */
+		>;
+	};
+
 	pinctrl_gpio: gpiogrp {
 		fsl,pins = <
 			MX7D_PAD_ENET1_RGMII_RD1__GPIO7_IO1	0x14
@@ -342,6 +369,15 @@ MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX	0x79
 		>;
 	};
 
+	pinctrl_uart3: uart3grp {
+		fsl,pins = <
+			MX7D_PAD_UART3_TX_DATA__UART3_DCE_TX	0x79
+			MX7D_PAD_UART3_RX_DATA__UART3_DCE_RX	0x79
+			MX7D_PAD_UART3_CTS_B__UART3_DCE_CTS	0x79
+			MX7D_PAD_UART3_RTS_B__UART3_DCE_RTS	0x79
+		>;
+	};
+
 	pinctrl_usdhc1: usdhc1grp {
 		fsl,pins = <
 			MX7D_PAD_SD1_CMD__SD1_CMD	0x59