We're starting to add support for 10, 12 and 16-bits formats that all have
different values for the Y offset and range. Some 10 bits formats
go from [0...1023], others go to [0...1023] shifted left by 6. To
accomodate all formats add a struct definition for all various formats,
this can be extended further when we add new formats.

Changes since v1:
- Rebase on top of added yuv changes.
- Add commit description (swatish)
- Add missing newline. (swatish)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> #v1