staging: comedi: ni_atmio: remove '= 0' boardinfo data

Remove all the boardinfo data the is set to '0'. They will default
to that when the boardinfo is declared.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>