Currently only fpga_pci.ko is actually installed and used.  It is close to the
E-Series version, except for special handling in fpgaIsr and fpgaMmap.

The other fpga_*.c files came from E-Series and have not been updated or tested.

In fpga_pci.c, only the system-called module functions (including fpgaMmap) and
fpgaIsr are currently used in StorageGRID.  fpgaIoctl came from E-Series and
has not been altered or tested.
