Use V4L2 CCI for accessing device's registers. The 8-bit compatibility
read option is removed but this is supported by regmap through other
means.

Also the CCS register definitions are re-generated with V4L2 CCI
definitions. The older SMIA++ register definitions have been manually
converted.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>