ide: set drive->autotune in ide_pci_setup_ports()

Majority of host drivers using IDE PCI layer set drive->autotune, the only
exceptions are:

generic.c
ns87415.c
rz1000.c
trm290.c
* no ->set_pio_mode method

it821x.c:
* if memory allocation fails drive->autotune won't be set
  (but there also won't be ->set_pio_mode method in such case)

piix.c:
* MPIIX controller (no ->init_hwif method so also no ->set_pio_mode method)

However if there is no ->set_pio_mode method there are no changes in behavior
w.r.t. PIO tuning so always set drive->autotune in ide_pci_setup_ports().

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

drivers/ide/pci/it821x.c

@@ -585,9 +585,6 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
 	} else
 		hwif->host_flags |= IDE_HFLAG_NO_SET_MODE;
 
-	hwif->drives[0].autotune = 1;
-	hwif->drives[1].autotune = 1;
-
 	if (hwif->dma_base == 0)
 		return;