Modify mouse and touch Qt5 changes for devices

Remove the TARGET_DESKTOP limitator from the earlier changes to support
the different techniques that Qt5 requires for mouse and touch events
compared to how it was handled under Qt4.8.

Contributed by kwangsub.kim@palm.com

Open-webOS-DCO-1.0-Signed-off-by: Roger Stringer <roger.stringer@palm.com>

Change-Id: I93a9318792431be601ec007bf2ac61f5c3d910aa
Merge "Modify mouse and touch Qt5 changes for devices"