agp: intel: 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: Dave Airlie <airlied@redhat.com>

drivers/char/agp/intel-agp.c

@@ -828,7 +828,7 @@ static int agp_intel_resume(struct pci_dev *pdev)
 }
 #endif
 
-static struct pci_device_id agp_intel_pci_table[] = {
+static const struct pci_device_id agp_intel_pci_table[] = {
 #define ID(x)						\
 	{						\
 	.class		= (PCI_CLASS_BRIDGE_HOST << 8),	\