qtcamconfig: don't try to read resolutions if we are not expecting it
qtcamconfig: don't try to read resolutions if we are not expecting it

alinelena/cameraplus,alinelena/cameraplus,mer-hybris-kis3/cameraplus,foolab/cameraplus,foolab/cameraplus,mlehtima/cameraplus,foolab/cameraplus,mer-hybris-kis3/cameraplus,mer-hybris-kis3/cameraplus,mlehtima/cameraplus,foolab/cameraplus,mlehtima/cameraplus,alinelena/cameraplus,mer-hybris-kis3/cameraplus,mlehtima/cameraplus,alinelena/cameraplus