ide: change ->set_dma_mode method parameters

Change ->set_dma_mode method parameters to match ->set_dmamode method
used in struct ata_port_operations.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/sgiioc4.c b/drivers/ide/sgiioc4.c
index b7d61dc..e3ea591 100644
--- a/drivers/ide/sgiioc4.c
+++ b/drivers/ide/sgiioc4.c
@@ -255,7 +255,7 @@
 	return dma_stat;
 }
 
-static void sgiioc4_set_dma_mode(ide_drive_t *drive, const u8 speed)
+static void sgiioc4_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
 }