uboot-imx

usb: hub: Call usb_update_hub_device() after hub descriptor is fetched

After fetching hub descriptor, we need to call USB uclass operation
update_hub_device() to notify HCD to do some preparation work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>