ARM: dts: imx7ulp-evk: disable usbotg1 overcurrent function

At imx7ulp evk, all USBOTG1 OC (Over Current) function pins are
used by others, and the USB driver doesn't support OC function
through the GPIO, so we disable the OC function for this board
as well as delete the pinctrl for it.
Reviewed-by: Jun Li <jun.li@nxp.com>
Acked-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx7ulp-evk.dts

@@ -72,7 +72,7 @@ &usbotg1 {
 	srp-disable;
 	hnp-disable;
 	adp-disable;
-	over-current-active-low;
+	disable-over-current;
 	status = "okay";
 };
 
@@ -110,7 +110,6 @@ IMX7ULP_PAD_PTC0__PTC0		0x20000
 	pinctrl_usbotg1_id: otg1idgrp {
 		fsl,pins = <
 			IMX7ULP_PAD_PTC13__USB0_ID	0x10003
-			IMX7ULP_PAD_PTC16__USB1_OC2	0x10003
 		>;
 	};