rockchip: rk3036: dtsi use max-frequency for mmc node

Since the 'clock-freq-min-max' is deprecated, we use max-frequency.
Signed-off-by: NKever Yang <kever.yang@rock-chips.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>

arch/arm/dts/rk3036.dtsi

@@ -244,7 +244,7 @@
 	emmc: dwmmc@1021c000 {
 		compatible = "rockchip,rk3288-dw-mshc";
 		clock-frequency = <37500000>;
-		clock-freq-min-max = <400000 37500000>;
+		max-frequency = <37500000>;
 		clocks = <&cru HCLK_EMMC>, <&cru SCLK_EMMC>,
 		<&cru SCLK_EMMC_DRV>, <&cru SCLK_EMMC_SAMPLE>;
 		clock-names = "biu", "ciu", "ciu_drv", "ciu_sample";