nfc: st-nci: constify i2c_device_id

i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/st-nci/i2c.c

@@ -279,7 +279,7 @@ static int st_nci_i2c_remove(struct i2c_client *client)
 	return 0;
 }
 
-static struct i2c_device_id st_nci_i2c_id_table[] = {
+static const struct i2c_device_id st_nci_i2c_id_table[] = {
 	{ST_NCI_DRIVER_NAME, 0},
 	{}
 };