igb_uio: use existing PCI macros
igb_uio: use existing PCI macros

To get pci_dev and vf number from dev, benefit from
existing macros in pci.h

Signed-off-by: Ferruh Yigit <ba8734c3c506d2e3557bd4ac8fdaccd25bdb9aa7@intel.com>
[Thomas note: it breaks the old 2.6.33 support]

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk