Changes:

- Delete the correct entry in the outgoing queue during DQBUF
- Implement correct image downscaling selection through VIDIOC_S_[CROP|FTM]
- Replace darkness controls with brightness (simple swapping) for PAS106B and
  PAS202BCB
- Implement gain control for TAS5110C1B and TAS5130D1B
- Add a note to the documentation about correct image downscaling selection
Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>