The API is cleaner if the control_data is const reference and the device
compid is an explicit output argument.
Signed-off-by: Julian Oes <julian@oes.ch>
It turns out that I had omitted implementing the gimbal_device_id which
is the component ID of the gimbal device that the gimbal manager (in
this case PX4) is responsible for.
Signed-off-by: Julian Oes <julian@oes.ch>