ide: add ide_pktcmd_tf_load() helper

Add ide_pktcmd_tf_load() helper and convert ATAPI device drivers to use it.

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-floppy.c

@@ -1067,13 +1067,8 @@ static ide_startstop_t idefloppy_issue_pc (ide_drive_t *drive, idefloppy_pc_t *p
 	if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
 		dma = !hwif->dma_setup(drive);
 
-	if (IDE_CONTROL_REG)
-		HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG);
-	/* Use PIO/DMA */
-	hwif->OUTB(dma, IDE_FEATURE_REG);
-	hwif->OUTB(bcount & 0xff, IDE_BCOUNTL_REG);
-	hwif->OUTB((bcount >> 8) & 0xff, IDE_BCOUNTH_REG);
-	HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
+	ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
+			   IDE_TFLAG_OUT_DEVICE, bcount, dma);
 
 	if (dma) {	/* Begin DMA, if necessary */
 		set_bit(PC_DMA_IN_PROGRESS, &pc->flags);