Currently there is a soft dependency on qtsvg that causes a build of
qt5 to have unknown build order for qtsvg and other modules. This
change makes it a hard dependency if the qtsvg module is available.

Change-Id: Ic58a63f3f5f1d813ba832455c1ad3af41599926b
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>