usb: gadget: uvc: Add missing initialization of ssp config descriptor

usb: gadget: uvc: Add missing initialization of ssp config descriptor

In case the uvc gadget is super speed plus, the corresponding config
descriptor wasn't initialized. As a result, the host will not recognize
the devices when using super speed plus connection.

This patch initializes them to super speed descriptors.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Shuzhen Wang <shuzhenwang@google.com>
Link: https://lore.kernel.org/r/20231027183440.1994315-1-shuzhenwang@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>