i2c: rk3x: add NULL entry to the end of_device_id array

drivers/i2c/busses/i2c-rk3x.c:610:69-70: rk3x_i2c_match is not NULL terminated at line 610

Make sure of_device_id tables are NULL terminated
Generated by: /kbuild/src/linux/scripts/coccinelle/misc/of_table.cocci
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-rk3x.c

@@ -608,6 +608,7 @@ static const struct of_device_id rk3x_i2c_match[] = {
 	{ .compatible = "rockchip,rk3066-i2c", .data = (void *)&soc_data[0] },
 	{ .compatible = "rockchip,rk3188-i2c", .data = (void *)&soc_data[1] },
 	{ .compatible = "rockchip,rk3288-i2c", .data = (void *)&soc_data[2] },
+	{},
 };
 
 static int rk3x_i2c_probe(struct platform_device *pdev)