ide: keep pointer to struct device instead of struct pci_dev in ide_hwif_t

Keep pointer to struct device instead of struct pci_dev in ide_hwif_t.

While on it:
* Use *dev->dma_mask instead of pci_dev->dma_mask in ide_toggle_bounce().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index cdb8147..5141730 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -622,8 +622,8 @@
 	strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE);
 	hwif->gendev.driver_data = hwif;
 	if (hwif->gendev.parent == NULL) {
-		if (hwif->pci_dev)
-			hwif->gendev.parent = &hwif->pci_dev->dev;
+		if (hwif->dev)
+			hwif->gendev.parent = hwif->dev;
 		else
 			/* Would like to do = &device_legacy */
 			hwif->gendev.parent = NULL;