regulator: fixed: Modify enable-active-high behavior

Regulator should not be enabled at probe time if regulator-boot-on
property is not in the dt node.

"enable-active-high" property is only used to indicate the GPIO
polarity.

See kernel documentation :
 - Documentation/devicetree/bindings/regulator/fixed-regulator.yaml
 - Documentation/devicetree/bindings/regulator/gpio-regulator.yaml

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

drivers/power/regulator/regulator_common.c

@@ -12,10 +12,15 @@ int regulator_common_ofdata_to_platdata(struct udevice *dev,
 	struct regulator_common_platdata *dev_pdata, const char *enable_gpio_name)
 {
 	struct gpio_desc *gpio;
+	struct dm_regulator_uclass_platdata *uc_pdata;
 	int flags = GPIOD_IS_OUT;
 	int ret;
 
-	if (dev_read_bool(dev, "enable-active-high"))
+	uc_pdata = dev_get_uclass_platdata(dev);
+
+	if (!dev_read_bool(dev, "enable-active-high"))
+		flags |= GPIOD_ACTIVE_LOW;
+	if (uc_pdata->boot_on)
 		flags |= GPIOD_IS_OUT_ACTIVE;
 
 	/* Get optional enable GPIO desc */