usb: chipidea: usbmisc: evdo is only specific to OTG port

The USB_PHY_CTRL_FUNC is used specific for OTG port as described
in user manual. EVDO need to be set only for index 0 that
correspond to OTG port
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/chipidea/usbmisc_imx.c

@@ -148,6 +148,9 @@ static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
 	if (data->index > 2)
 		return -EINVAL;
 
+	if (data->index)
+		return 0;
+
 	if (data->evdo) {
 		spin_lock_irqsave(&usbmisc->lock, flags);
 		reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;