ide: turn set_irq() method into write_devctl() method

Turn set_irq() method with its software reset hack into write_devctl() method
(for just writing a value into the device control register) at last...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ns87415.c b/drivers/ide/ns87415.c
index 13a9e00..00ab0be 100644
--- a/drivers/ide/ns87415.c
+++ b/drivers/ide/ns87415.c
@@ -109,8 +109,7 @@
 	.exec_command		= ide_exec_command,
 	.read_status		= superio_read_status,
 	.read_altstatus		= ide_read_altstatus,
-
-	.set_irq		= ide_set_irq,
+	.write_devctl		= ide_write_devctl,
 
 	.tf_load		= ide_tf_load,
 	.tf_read		= superio_tf_read,