staging: comedi: addi_apci_1516: don't read the unused PCI bars

This driver does use devpriv->i_IobaseAmcc or devpriv->i_IobaseReserved.
Don't bother reading these PCI bars.

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>