ide: add ide_set_irq() inline helper

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 063e0eb..c58edc8 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -83,8 +83,7 @@
 		tf->hob_lbam, tf->hob_lbah);
 #endif
 
-	if (IDE_CONTROL_REG)
-		hwif->OUTB(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */
+	ide_set_irq(drive, 1);
 
 	if ((task->tf_flags & IDE_TFLAG_NO_SELECT_MASK) == 0)
 		SELECT_MASK(drive, 0);