V4L2ControlId and V4L2ControlInfo are just convenience classes to
create ControlId and ControlInfo from v4l2_query_ext_control.
Therefore, there is no need of being a class. It is used only
from V4L2Device. This removes the classes and put the equivalent
functions of creating ControlId and ControlInfo in
v4l2_device.cpp.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>