ide: remove pciirq argument from ide_pci_setup_ports()

* Set ->irq explicitly in cs5520.c.

* Remove irq argument from ide_hw_configure().

* Remove pciirq argument from ide_pci_setup_ports().

There should be no functional changes caused by this patch.

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