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/tx4938ide.c b/drivers/ide/tx4938ide.c
index 1c4a78a..ec3aa32 100644
--- a/drivers/ide/tx4938ide.c
+++ b/drivers/ide/tx4938ide.c
@@ -204,8 +204,7 @@
 	.exec_command		= ide_exec_command,
 	.read_status		= ide_read_status,
 	.read_altstatus		= ide_read_altstatus,
-
-	.set_irq		= ide_set_irq,
+	.write_devctl		= ide_write_devctl,
 
 	.tf_load		= tx4938ide_tf_load,
 	.tf_read		= tx4938ide_tf_read,