usb_gadget_connect
usb_gadget_connect(isp->phy->otg->gadget);
usb_gadget_connect(&ci->gadget);
EXPORT_SYMBOL_GPL(usb_gadget_connect);
DEFINE_EVENT(udc_log_gadget, usb_gadget_connect,
int usb_gadget_connect(struct usb_gadget *gadget);