spi/rockchip: add compatible strings for RK3188 and RK3288

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Addy Ke <addy.ke@rockchip.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index a8866c9..cb8fd6f 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -814,6 +814,8 @@
 
 static const struct of_device_id rockchip_spi_dt_match[] = {
 	{ .compatible = "rockchip,rk3066-spi", },
+	{ .compatible = "rockchip,rk3188-spi", },
+	{ .compatible = "rockchip,rk3288-spi", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, rockchip_spi_dt_match);