tegra_xusb_port_init
err = tegra_xusb_port_init(&usb3->base, padctl, np, "usb3", index);
err = tegra_xusb_port_init(&usb2->base, padctl, np, "usb2", index);
err = tegra_xusb_port_init(&ulpi->base, padctl, np, "ulpi", index);
err = tegra_xusb_port_init(&hsic->base, padctl, np, "hsic", index);