taxonomy: add Nexus, Printer, & Roku signatures

+ alternate Nexus 4, 5X, 6, and 7 signatures.
+ alternate HP Printer and Roku 3 signatures.
+ update Chromebook, Kindle, Playstation, Vizio Smart TV,
    Xbox One signatures to v4.
+ correct Xbox One signatures: both are 2.4GHz, because
  both contain IE=50.
+ add Murata OUI.

Change-Id: Ibd277775f17d6613d8251e4d789cfedd3780dace
4 files changed