mtd: ichxrom: constify pci_device_id.

pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/maps/ichxrom.c

@@ -323,7 +323,7 @@ static void ichxrom_remove_one(struct pci_dev *pdev)
 	ichxrom_cleanup(window);
 }
 
-static struct pci_device_id ichxrom_pci_tbl[] = {
+static const struct pci_device_id ichxrom_pci_tbl[] = {
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
 	  PCI_ANY_ID, PCI_ANY_ID, },
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
@@ -351,7 +351,7 @@ static struct pci_driver ichxrom_driver = {
 static int __init init_ichxrom(void)
 {
 	struct pci_dev *pdev;
-	struct pci_device_id *id;
+	const struct pci_device_id *id;
 
 	pdev = NULL;
 	for (id = ichxrom_pci_tbl; id->vendor; id++) {