sata_sil: enable 32-bit PIO

32-bit PIO seems to work fine on sata_sil hardware (tested on SiI3114) and is
listed as OK in the Silicon Image datasheets. Enable it.

Signed-off-by: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c
index e67ce8e..030ec07 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -183,7 +183,7 @@
 };
 
 static struct ata_port_operations sil_ops = {
-	.inherits		= &ata_bmdma_port_ops,
+	.inherits		= &ata_bmdma32_port_ops,
 	.dev_config		= sil_dev_config,
 	.set_mode		= sil_set_mode,
 	.bmdma_setup            = sil_bmdma_setup,