staging: comedi: dt3000: refactor 'adbits' boardinfo
staging: comedi: dt3000: refactor 'adbits' boardinfo

All the board supported by this driver have analog inputs. The input
resolution is either 12-bit or 16-bit.

Replace the 'adbits' member of the boardinfo with a bit-field flag
'ai_is_16bits' and just set if for the 16-bit boards.

Signed-off-by: H Hartley Sweeten <382ff55d8e07d1082d179e669636cd1552da4f36@visionengravers.com>
Reviewed-by: Ian Abbott <9e6ba6483b6a3e14d61f7c987e72ecb5b46122d6@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs