synaptics: fix touch screen to not report events when ts is off

when irq wake is set for s2w/l2w/h2w wake options touch events
should not be reported when the screen is off. Patch fixes the issue.

Change-Id: Ic6dfbda667e3bb3fe83d9146a2329b6dc7532119

Conflicts:
	drivers/input/touchscreen/synaptics_3200.c