QCameraViewfinderSettingsControl2 is not implemented on Android

There is no class that implements QCameraViewfinderSettingsControl2 interface on Android. It means that viewfinderSettingsControl2 member of class QCameraPrivate is always null, hence such methods like QCamera::supportedViewfinderSettings will always return empty list.

This is already mentioned in https://bugreports.qt.io/browse/QTBUG-46470 but bug is closed. I think it makes sense to open this feature request for tracking purpose, e.g. to know if somebody will fix it.