arm64: dts: rockchip: define iodomains for rk3368-lion

This is not strictly needed, as 3.3V is the default,
but good to have for descriptive purposes nevertheless.
Signed-off-by: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
[fixed ordering]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20210922230429.2162535-2-heiko@sntech.de

arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi

@@ -273,6 +273,18 @@ &i2c2 {
 	status = "okay";
 };
 
+/* The RK3368-uQ7 "Lion" has most IO voltages hardwired to 3.3V. */
+&io_domains {
+	audio-supply = <&vcc33_io>;
+	dvp-supply = <&vcc33_io>;
+	flash0-supply = <&vcc_18>;
+	gpio30-supply = <&vcc33_io>;
+	gpio1830-supply = <&vcc33_io>;
+	sdcard-supply = <&vcc33_io>;
+	wifi-supply = <&vcc33_io>;
+	status = "okay";
+};
+
 &pinctrl {
 	leds {
 		module_led_pins: module-led-pins {
@@ -292,6 +304,12 @@ pmic_sleep: pmic-sleep {
 	};
 };
 
+&pmu_io_domains {
+	pmu-supply = <&vcc33_io>;
+	vop-supply = <&vcc33_io>;
+	status = "okay";
+};
+
 &spi1 {
 	status = "okay";