ARM: dts: st: stm32mp157c-emstamp: correct regulator-active-discharge

The "regulator-active-discharge" property is uint32, not boolean:

  stm32mp157c-emsbc-argon.dtb: stpmic@33: regulators:pwr_sw1:regulator-active-discharge: True is not of type 'array'
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/st/stm32mp157c-emstamp-argon.dtsi

@@ -320,7 +320,7 @@ bst_out: boost {
 			vbus_otg: pwr_sw1 {
 				regulator-name = "vbus_otg";
 				interrupts = <IT_OCP_OTG 0>;
-				regulator-active-discharge;
+				regulator-active-discharge = <1>;
 			};
 
 			vbus_usbh: pwr_sw2 {