[libata] constify PCI ID table in several drivers
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 10c470e..57ef7ae 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -255,7 +255,7 @@
 	},
 };
 
-static struct pci_device_id ahci_pci_tbl[] = {
+static const struct pci_device_id ahci_pci_tbl[] = {
 	{ PCI_VENDOR_ID_INTEL, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	  board_ahci }, /* ICH6 */
 	{ PCI_VENDOR_ID_INTEL, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0,