Use highspeed configuration for emmc

Change-Id: I96dfb99dec77f4f576deae15db20be744d357524
Reviewed-on: https://tp-biosrd-v02/gerrit/80231
Reviewed-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>
Tested-by: Alex Cheng(鄭富元) <Alex_Cheng@asus.com>

Author: alex3788

arch/arm/boot/dts/rk3288-miniarm.dts

@@ -897,3 +897,17 @@
 
 	#cooling-cells = <2>; /* min followed by max */
 };
+
+&emmc {
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	disable-wp;
+	non-removable;
+	num-slots = <1>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_clk &emmc_cmd &emmc_pwr &emmc_bus8>;
+	max-frequency = <100000000>;
+	mmc-hs200-1_8v;
+	mmc-ddr-1_8v;
+	status = "okay";
+};