ARM: socfpga: Disable OC on MCVEVK

Disable the OC test on MCVEVK as the old PHY version does not provide
this information. This fixes the USB OTG operation.

Signed-off-by: Marek Vasut <marex@denx.de>

arch/arm/dts/socfpga_cyclone5_mcvevk.dts

@@ -54,5 +54,6 @@
 };
 
 &usb1 {
+	disable-over-current;
 	status = "okay";
 };