[USB] hotplug

    ACTION ... "add", "remove"
    PRODUCT ... USB vendor, product, and version codes (hex)
    TYPE ... device class codes (decimal)
    INTERFACE ... interface 0 class codes (decimal)

    USB_DEVICE (vendorId, productId)
        ... matching devices with specified vendor and product ids
    USB_DEVICE_VER (vendorId, productId, lo, hi)
        ... like USB_DEVICE with lo <= productversion <= hi
    USB_INTERFACE_INFO (class, subclass, protocol)
        ... matching specified interface class info
    USB_DEVICE_INFO (class, subclass, protocol)
        ... matching specified device class info