staging: comedi: ni_pcidio: factor board reset out of attach

Factor the code that resets the board and disables the interrupts out
of the attach.

Move the reset so it happens before the subdevices are initialized.

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>