ide: use ide_init_port_hw() in setup-pci.c

* Move setting hwif->gendev.parent from ide_pci_setup_ports()
  to ide_hwif_configure().

* Always set hwif->io_ports in ide_hwif_configure().

* Use ide_init_port_hw() in ide_hwif_configure().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>