arm: mvebu: dts: turris_mox: fix USB3 regulator

Commit e8e9715d requires the USB3 regulator node to have the
enable-active-high property for the regulator to work properly. The
GPIO_ACTIVE_HIGH constant is not enough anymore.
Signed-off-by: NMarek Behún <marek.behun@nic.cz>
Fixes: e8e9715d ("regulator: fixed: Modify enable-active-high...")
Reviewed-by: NStefan Roese <sr@denx.de>

arch/arm/dts/armada-3720-turris-mox.dts

@@ -42,6 +42,7 @@
 		startup-delay-us = <2000000>;
 		shutdown-delay-us = <1000000>;
 		gpio = <&gpiosb 0 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
 		regulator-boot-on;
 	};