fb: follow new 4.4 transition on center clock and circle battery

Change-Id: I50657071f290e0646193d079ab9319ed15f667b6
Keaguard: enable translucent keyguard by default

currently it is possible to enable it per device over an overlay and it is disabled
by default. Enable it by default but respect general transluscent disable from
device tree. Manta eg disables this feature due of graphical glichtes.

Change-Id: I3579d47ee3bee05719ef357ffcf19c0137b2302f