media: mantis: 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: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/pci/mantis/mantis_cards.c

@@ -281,7 +281,7 @@ static void mantis_pci_remove(struct pci_dev *pdev)
 	return;
 }
 
-static struct pci_device_id mantis_pci_table[] = {
+static const struct pci_device_id mantis_pci_table[] = {
 	MAKE_ENTRY(TECHNISAT, CABLESTAR_HD2, &vp2040_config,
 		   RC_MAP_TECHNISAT_TS35),
 	MAKE_ENTRY(TECHNISAT, SKYSTAR_HD2_10, &vp1041_config,