HID: cougar: Constify cougar_id_table

cougar_id_table[] is not changed and can be made const to allow the
compiler to put it in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-cougar.c

@@ -321,7 +321,7 @@ static const struct kernel_param_ops cougar_g6_is_space_ops = {
 };
 module_param_cb(g6_is_space, &cougar_g6_is_space_ops, &g6_is_space, 0644);
 
-static struct hid_device_id cougar_id_table[] = {
+static const struct hid_device_id cougar_id_table[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SOLID_YEAR,
 			 USB_DEVICE_ID_COUGAR_500K_GAMING_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SOLID_YEAR,