ARM: dts: aspeed: Enable first MMC slot on AST2500 EVB

The EVB contains two slots. Enable one of them for testing purposes.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-ast2500-evb.dts

@@ -94,6 +94,17 @@ lm75@4d {
 	};
 };
 
+&sdmmc {
+	status = "okay";
+};
+
+&sdhci0 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sd1_default>;
+};
+
 /*
  * Enable port A as device (via the virtual hub) and port B as
  * host by default on the eval board. This can be easily changed