taxonomy: add Wii-U
taxonomy: add Wii-U

+ add a signature for the Nintendo Wii-U.
+ add alternate signatures for the iPad (1st/2nd gen), Nexus 4,
    Nexus 7 (2013), and Samsung Galaxy Note 3

Change-Id: I64df20857d6cd25c786259e74ece03e918a04639

NetworkDeviceTaxonomy/wifi_taxonomy,NetworkDeviceTaxonomy/wifi_taxonomy,NetworkDeviceTaxonomy/wifi_taxonomy,NetworkDeviceTaxonomy/wifi_taxonomy