Update the Qt5 build function with dependencies

Change-Id: I34ea3a01e88fa69197a20e590bc1c34015e7a931
Open-webOS-DCO-1-0-Signed-off-by: Roger Stringer <roger.stringer@palm.com>
Reviewed-on: http://g2g.palm.com/1454
Reviewed-by: Build Verification
Tested-by: Roger Stringer <roger.stringer@palm.com>
Reviewed-by: Eric Blade <eric.blade@palm.com>
Tested-by: Eric Blade <eric.blade@palm.com>
Reviewed-by: Roger Stringer <roger.stringer@palm.com>