Check if QT_CONFIG contains embedded to enable QWS build
Check if QT_CONFIG contains embedded to enable QWS build

RevBy: TrustMe
Code in the common_check.pri for maliit-keyboard was relying
on it but it was never set.

RHawkeyed/plugins,KDE/plasma-maliit-plugins,KDE/plasma-maliit-plugins,KDE/plasma-maliit-plugins,develersrl/maliit-demo-qml,RHawkeyed/plugins,RHawkeyed/plugins,maliit/plugins,KDE/plasma-maliit-plugins,maliit/plugins,RHawkeyed/plugins,maliit/plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,maliit/plugins,develersrl/maliit-demo-qml,develersrl/maliit-demo-qml