package/matchbox: add missing dependencies to matchbox-lib

Most of the matchbox packages build-depend on matchbox-lib, but were not
selecting it from their Config.in.

Fix that.

Reported-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>