Ref #15 : Correct setting of the is_64 and is_prefetchable pci_device fields in...

Correct setting of the is_64 and is_prefetchable pci_device fields in pci_device_linux_sysfs_probe(). The pci_device struct defines is_64 and is_prefetchable as single bits, but the previous code was attempting to store the result of a bit-masked field in a single bit which always resulted in is_64 and is_prefetchable being zero regardless of the actual capabilities of the PCI device.