arm64: dts: imx8mp-verdin: correct off-on-delay

The property should be off-on-delay-us, not off-on-delay

Fixes: a39ed23b ("arm64: dts: freescale: add initial support for verdin imx8m plus")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi

@@ -10,7 +10,7 @@ reg_eth2phy: regulator-eth2phy {
 		compatible = "regulator-fixed";
 		enable-active-high;
 		gpio = <&gpio_expander_21 4 GPIO_ACTIVE_HIGH>; /* ETH_PWR_EN */
-		off-on-delay = <500000>;
+		off-on-delay-us = <500000>;
 		regulator-max-microvolt = <3300000>;
 		regulator-min-microvolt = <3300000>;
 		regulator-name = "+V3.3_ETH";

arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi

@@ -87,7 +87,7 @@ reg_module_eth1phy: regulator-module-eth1phy {
 		compatible = "regulator-fixed";
 		enable-active-high;
 		gpio = <&gpio2 20 GPIO_ACTIVE_HIGH>; /* PMIC_EN_ETH */
-		off-on-delay = <500000>;
+		off-on-delay-us = <500000>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_reg_eth>;
 		regulator-always-on;
@@ -128,7 +128,7 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
 		enable-active-high;
 		/* Verdin SD_1_PWR_EN (SODIMM 76) */
 		gpio = <&gpio4 22 GPIO_ACTIVE_HIGH>;
-		off-on-delay = <100000>;
+		off-on-delay-us = <100000>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_usdhc2_pwr_en>;
 		regulator-max-microvolt = <3300000>;