ls2k300_Pi:dts:Add node for aht20

Signed-off-by: maoxiaochuan <maoxiaochuan@loongson.cn>

arch/loongarch/boot/dts/ls2k300_vanguard_pi.dts

@@ -7,6 +7,17 @@
 
 #include "ls2k300_vanguard_pi_common.dtsi"
 
+/ {
+	vdd_3v3: fixed-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		status = "okay";
+	};
+};
+
 &uart2 {
 	status = "ok"
 };
@@ -61,15 +72,21 @@
 &i2c1 {
 	i2c-speed = <400000>;
 
-	bh1750@23 {
+	bh1750: ambient-light-sensor@23 {
 		compatible = "rohm,bh1750";
 		reg = <0x23>;
 	};
 
-	bl24c32a@50 {
+	bl24c32a: eeprom@50 {
 		compatible = "atmel,24c32";
 		reg = <0x50>;
 	};
+
+	aht20: temperature-humidity-sensor@38 {
+		compatible = "asair,aht20";
+		reg = <0x38>;
+		vdd-supply = <&vdd_3v3>;
+	};
 };
 
 &i2c2 {