qt5-plugin-generic-vboxtouch: add touchscreen driver for virtualbox

Signed-off-by: Simon Busch <morphis@gravedo.de>
packagegroup-webos-ports-extended: add qt5-plugin-generic-vboxtouch for qemux86/qemux86-64

Signed-off-by: Simon Busch <morphis@gravedo.de>
luna-next-conf: add platform specific configuration for luna-next

Signed-off-by: Simon Busch <morphis@gravedo.de>