media: mantis: hopper_cards: 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/hopper_cards.c

@@ -255,7 +255,7 @@ static void hopper_pci_remove(struct pci_dev *pdev)
 
 }
 
-static struct pci_device_id hopper_pci_table[] = {
+static const struct pci_device_id hopper_pci_table[] = {
 	MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,
 		   NULL),
 	{ }