staging: comedi: addi_apci_1710: remove boardinfo

This driver only uses the boardinfo to get the dev->board_name.
Just use the dev->driver->driver_name and remove the unnecessary
boardinfo completely.

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