ARM: dts: exynos: Add support for wlan to Artik 5

On the Artik 520 module, there is a bcm4354 attached to mshc_1. Enable
it and turn on the regulator used for it, so that both WiFi & Bluetooth
will work.

Verified to work on the Artik 520 evaluation board.

Signed-off-by: Michael Lyle <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

arch/arm/boot/dts/exynos3250-artik5.dtsi

···
 				regulator-name = "VLDO23_1.8V";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
 			};
 
 			ldo24_reg: LDO24 {
···
 	pinctrl-0 = <&sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8>;
 	bus-width = <8>;
 	status = "okay";
+};
+
+&mshc_1 {
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	disable-wp;
+	non-removable;
+	keep-power-in-suspend;
+	fifo-depth = <0x40>;
+	vqmmc-supply = <&ldo11_reg>;
+	/*
+	 * Voltage negotiation is broken for the SDIO periph so we
+	 * can't actually set the voltage here.
+	 * vmmc-supply = <&ldo23_reg>;
+	 */
+	card-detect-delay = <500>;
+	clock-frequency = <100000000>;
+	max-frequency = <100000000>;
+	samsung,dw-mshc-ciu-div = <3>;
+	samsung,dw-mshc-sdr-timing = <0 1>;
+	samsung,dw-mshc-ddr-timing = <1 2>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sd1_cmd &sd1_clk &sd1_bus1 &sd1_bus4 &wlanen>;
+	bus-width = <4>;
+	status = "okay";
+};
+
+&pinctrl_1 {
+	wlanen: wlanen {
+		samsung,pins = "gpx2-3";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_OUTPUT>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV3>;
+		samsung,pin-val = <1>;
+	};
 };
 
 &rtc {