x11/kdisplay: add missing dependency after d062b287b67f
$ kdisplay
kf.kcmutils: Error loading QML file qrc:/kcm/kcm_kdisplay/main.qml
kf.kcmutils: qrc:/kcm/kcm_kdisplay/main.qml:21:1: module "org.kde.kitemmodels" is not installed
import org.kde.kitemmodels 1.0 ^