ARM: dts: colibri-imx6: specify usbh_pen gpio being active-low

Specify USBH_PEN GPIO being active-low rather than active-high.

Note that this should not have any functional impact as for fixed
regulators the regular GPIO polarity is ignored and a true active-high
enable GPIO would need an additional enable-active-high property which
is/was not the case here. However, this may be rather confusing which
this patch fixes.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-colibri.dtsi

@@ -112,7 +112,7 @@ reg_module_3v3_audio: regulator-module-3v3-audio {
 
 	reg_usb_host_vbus: regulator-usb-host-vbus {
 		compatible = "regulator-fixed";
-		gpio = <&gpio3 31 GPIO_ACTIVE_HIGH>; /* SODIMM 129 / USBH_PEN */
+		gpio = <&gpio3 31 GPIO_ACTIVE_LOW>; /* SODIMM 129 / USBH_PEN */
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_regulator_usbh_pwr>;
 		regulator-max-microvolt = <5000000>;