Always build uic

Even if we are not building gui or widgets. This tool is needed later
as a native tool when compiling the target.

Change-Id: I257668ac28c22b192e7ec7736e6c23fa3be6bab6
Signed-off-by: Mikko Levonmaa <mikko.levonmaa@palm.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>