DSS2: Swap field 0 and field 1 registers

The values for the registers which have alternate values for each field
were reveresed to what the hardware expects. For the hardware field 0
is the even field or the bottom field, field 1 is the odd field or the
top field. So simply swap the register values.

Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com>