arm: dts: mt7623: fix the regulators mmc should use on bananapi-r2

Both mmc devices on bananapi-r2 board should all use the fixed regulators
as their power source instead of PMIC MT6323 exports.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts

@@ -39,6 +39,15 @@ cpu@3 {
 		};
 	};
 
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-name = "fixed-3.3V";
@@ -209,8 +218,8 @@ &mmc0 {
 	bus-width = <8>;
 	max-frequency = <50000000>;
 	cap-mmc-highspeed;
-	vmmc-supply = <&mt6323_vemc3v3_reg>;
-	vqmmc-supply = <&mt6323_vio18_reg>;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_1p8v>;
 	non-removable;
 };
 
@@ -223,8 +232,8 @@ &mmc1 {
 	max-frequency = <50000000>;
 	cap-sd-highspeed;
 	cd-gpios = <&pio 261 GPIO_ACTIVE_LOW>;
-	vmmc-supply = <&mt6323_vmch_reg>;
-	vqmmc-supply = <&mt6323_vio18_reg>;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_3p3v>;
 };
 
 &pio {