Input: make PCI device ids constant

The id_table field of the struct pci_driver is constant in <linux/pci.h>
so it makes sense to mark initialization data also constant.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/gameport/emu10k1-gp.c b/drivers/input/gameport/emu10k1-gp.c
index b04930f..7392992 100644
--- a/drivers/input/gameport/emu10k1-gp.c
+++ b/drivers/input/gameport/emu10k1-gp.c
@@ -46,7 +46,7 @@
 	int size;
 };
 
-static struct pci_device_id emu_tbl[] = {
+static const struct pci_device_id emu_tbl[] = {
 
 	{ 0x1102, 0x7002, PCI_ANY_ID, PCI_ANY_ID }, /* SB Live gameport */
 	{ 0x1102, 0x7003, PCI_ANY_ID, PCI_ANY_ID }, /* Audigy gameport */