Buttons: set HOME wake key default as disabled [1/2]

* This should really be opt-in as needed by the user,
  not forced upon by default. This matches other wake
  key defaults
* With these settings removed by overlay, defaulting
  as true they conflict with kernel features like s2w
  on capacitive Key devices.

Change-Id: Ibdd580fd0d0ed268fbd504f82db8e47901a3741d