stm32mp1: board: Update the way vdd-supply is retrieved from DT

Due to kernel DT alignment, pwr-supply is renamed to vdd-supply
and is a subnode of pwr-regulators.
Signed-off-by: NPatrice Chotard <patrice.chotard@st.com>
Signed-off-by: NPatrick Delaunay <patrick.delaunay@st.com>

arch/arm/dts/stm32mp157a-avenger96.dts

@@ -283,7 +283,10 @@
 };
 
 &pwr {
-	pwr-supply = <&vdd>;
+	pwr-regulators {
+		vdd-supply = <&vdd>;
+		vdd_3v3_usbfs-supply = <&vdd_usb>;
+	};
 };
 
 &rng1 {

arch/arm/dts/stm32mp157a-dk1.dts

@@ -308,7 +308,10 @@
 };
 
 &pwr {
-	pwr-supply = <&vdd>;
+	pwr-regulators {
+		vdd-supply = <&vdd>;
+		vdd_3v3_usbfs-supply = <&vdd_usb>;
+	};
 };
 
 &rng1 {

arch/arm/dts/stm32mp157c-ed1.dts

@@ -218,7 +218,10 @@
 };
 
 &pwr {
-	pwr-supply = <&vdd>;
+	pwr-regulators {
+		vdd-supply = <&vdd>;
+		vdd_3v3_usbfs-supply = <&vdd_usb>;
+	};
 };
 
 &rng1 {

board/st/stm32mp1/stm32mp1.c

@@ -472,7 +472,9 @@ static void sysconf_init(void)
 	 *   => U-Boot set the register only if VDD < 2.7V (in DT)
 	 *      but this value need to be consistent with board design
 	 */
-	ret = syscon_get_by_driver_data(STM32MP_SYSCON_PWR, &pwr_dev);
+	ret = uclass_get_device_by_driver(UCLASS_PMIC,
+					  DM_GET_DRIVER(stm32mp_pwr_pmic),
+					  &pwr_dev);
 	if (!ret) {
 		ret = uclass_get_device_by_driver(UCLASS_MISC,
 						  DM_GET_DRIVER(stm32mp_bsec),
@@ -486,8 +488,8 @@ static void sysconf_init(void)
 		if (!ret)
 			otp = otp & BIT(13);
 
-		/* get VDD = pwr-supply */
-		ret = device_get_supply_regulator(pwr_dev, "pwr-supply",
+		/* get VDD = vdd-supply */
+		ret = device_get_supply_regulator(pwr_dev, "vdd-supply",
 						  &pwr_reg);
 
 		/* check if VDD is Low Voltage */