apq8064-common : Enable device key handler

Re-enable device key handler for screen-off gestures.

Change-Id: Id36032c2a5299b2d5d31431e62db365b35eae4b0
Merge branch 'cm-11.0' into martincz
update

Change-Id: Ia6a690b1d392223d3cca0574b35ad53045bcb7e6