arm64: dts: allwinner: a64: Orange Pi Win: Add SDIO node

The Orange Pi Win features a soldered WiFi chip on the board, connected
via the SDIO interface. Add the required DT nodes.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

arch/arm64/boot/dts/allwinner/sun50i-a64-orangepi-win.dts

@@ -94,6 +94,11 @@ reg_usb1_vbus: usb1-vbus {
 		gpio = <&pio 3 7 GPIO_ACTIVE_HIGH>; /* PD7 */
 		status = "okay";
 	};
+
+	wifi_pwrseq: wifi_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&r_pio 0 8 GPIO_ACTIVE_LOW>; /* PL8 */
+	};
 };
 
 &ehci0 {
@@ -130,6 +135,17 @@ &mmc0 {
 	status = "okay";
 };
 
+&mmc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc1_pins>;
+	vmmc-supply = <&reg_dldo2>;
+	vqmmc-supply = <&reg_dldo4>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	non-removable;
+	status = "okay";
+};
+
 &ohci0 {
 	status = "okay";
 };