#22 v4l2 controls - put good default values + add hflip/vflip

[cristi]

I saw hflip/vflip are not present as controls so I added them.
Also, code is now correctly setting the '.default_value' field for each of the controls, based on the values computed in usb_stk11xx_default_settings() and not some pure hardcoded values.

And there's a try to fix my permanent freezes whenever I do rmmod + modprobe. Still not fixing things :-(

Patch is against tag 2.1.0

[cristi]