ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers

Do explicit port setup in legacy VLB host drivers instead of depending
on init_ide_data().  This way hwif->io_ports[] and hwif->irq are always
correctly set regardless of CONFIG_PCI / CONFIG_BLK_DEV_IDEPCI.

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