smdk4412: double tap to wake

Delay should be set to 0 to enable this.

Change-Id: I9f78b796d3e4e16bdf20e032bf46ce42db8e533a

Conflicts:
	drivers/misc/touch_wake.c

	new file:   drivers/misc/touch_wake.c double tap to wake [thanks to omni gerrit & Utkarsh Gupta]