arm64: dts: imx8m: configure FEC PHY VDDIO voltage

As commit 2f664823 ("net: phy: at803x: add device tree binding")
described, configure FEC PHY VDDIO voltage according to board design.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi

@@ -117,6 +117,12 @@ ethphy0: ethernet-phy@0 {
 			reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <10000>;
 			qca,disable-smarteee;
+			vddio-supply = <&vddio>;
+
+			vddio: vddio-regulator {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+			};
 		};
 	};
 };

arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi

@@ -100,6 +100,12 @@ ethphy0: ethernet-phy@0 {
 			reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <10000>;
 			qca,disable-smarteee;
+			vddio-supply = <&vddio>;
+
+			vddio: vddio-regulator {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+			};
 		};
 	};
 };

arch/arm64/boot/dts/freescale/imx8mq-evk.dts

@@ -170,6 +170,10 @@ ethphy0: ethernet-phy@0 {
 			reset-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <10000>;
 			qca,disable-smarteee;
+			vddio-supply = <&vddh>;
+
+			vddh: vddh-regulator {
+			};
 		};
 	};
 };