mcb: Add PCI carrier for MEN Chameleon Bus

Add support for MCB over PCI devices. Both PCI attached on-board Chameleon FPGAs
as well as CompactPCI based MCB carrier cards are supported with this driver.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>