USB_BLACKLIST_WWAN: exclude wwan devices from usb autosuspend,
    currently for Ericsson and Gobi devices.
USB_BLACKLIST_WWAN: checking for drivers on subdevices doesn't work
    on boot, so do it simple and stupid via idVendor
        0bdb Ericsson Business Mobile Networks BV
        05c6 Qualcomm, Inc.
        1199 Sierra Wireless
    Caveat: works on ThinkPads but not HP, Dell et al.