Shamu: Re-add FauxSound

Initial import of FauxSound Driver 3.6 from 3.4 linux kernel drivers tailored
for Nexus 6

GPL Copyright 2014 Paul Reioux (Faux123)

Change-Id: I7ac87655dd2e0340a92989f34a94124f79f32dab
Signed-off-by: Paul Reioux <reioux@gmail.com>