Fix pmic output voltage for the 40-pin outputs

Provide 3.3V GPIO based on the design doc
Enable VGP2

Change-Id: Ia4bcead7bf732d6580e95105abacdd5bb11c6d78
diff --git a/arch/arm64/boot/dts/mediatek/mt8167-coral.dts b/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
index fec8ffb..43456a4 100644
--- a/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8167-coral.dts
@@ -116,6 +116,7 @@
 };
 
 &mt6392_vcamaf_reg {
+	regulator-min-microvolt = <3300000>;
 	regulator-always-on;
 };
 
@@ -124,6 +125,19 @@
 	regulator-always-on;
 };
 
+&mt6392_vgp2_reg {
+	regulator-min-microvolt = <3300000>;
+	regulator-always-on;
+};
+
+&mt6392_vmch_reg {
+	regulator-min-microvolt = <3300000>;
+};
+
+&mt6392_vmc_reg {
+	regulator-min-microvolt = <3300000>;
+};
+
 &uart0 {
 	status = "okay";
 };