staging: comedi: ni_daq_700: move the boardinfo variable

For aesthetic reasons, move the boardinfo declaration down so it's
next to the comedi_driver. That's the only place in the driver
where it's referenced directly.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>