media: ttpci: budget-av: constify pci_device_id

pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <media/drv-intf/saa7146.h>
and <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/ttpci/budget-av.c

@@ -1567,7 +1567,7 @@ MAKE_BUDGET_INFO(cin1200c, "Terratec Cinergy 1200 DVB-C", BUDGET_CIN1200C);
 MAKE_BUDGET_INFO(cin1200cmk3, "Terratec Cinergy 1200 DVB-C MK3", BUDGET_CIN1200C_MK3);
 MAKE_BUDGET_INFO(cin1200t, "Terratec Cinergy 1200 DVB-T", BUDGET_CIN1200T);
 
-static struct pci_device_id pci_tbl[] = {
+static const struct pci_device_id pci_tbl[] = {
 	MAKE_EXTENSION_PCI(knc1s, 0x1131, 0x4f56),
 	MAKE_EXTENSION_PCI(knc1s, 0x1131, 0x0010),
 	MAKE_EXTENSION_PCI(knc1s, 0x1894, 0x0010),