Removed long-press the back key kill the foreground app.

Change-Id: I4afece96978868d2a52024e6fa376423255ca07f
 Add Config for checking proximity on Wake.

Change-Id: I3a44434f3896ec92a554aa482ab26432464d9682
Disable Dual Sim For Now
- Causes Repeated SystemUI Fc's

Change-Id: I274f07a80cdb2d54ecf8ac5bb7460f198db44b80