ARM: dts: imx6ull-tarragon: fix USB over-current polarity

Our Tarragon platform uses a active-low signal to inform
the i.MX6ULL about the over-current detection.

Fixes: 5e4f393 ("ARM: dts: imx6ull: Add chargebyte Tarragon support")
Signed-off-by: Michael Heimpold <michael.heimpold@chargebyte.com>
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: mhei

arch/arm/boot/dts/nxp/imx/imx6ull-tarragon-common.dtsi

@@ -805,6 +805,7 @@
 		     &pinctrl_usb_pwr>;
 	dr_mode = "host";
 	power-active-high;
+	over-current-active-low;
 	disable-over-current;
 	status = "okay";
 };