arm: mvebu: add DT information for the SDIO interface of Armada 370/XP

Now that the mvsdio MMC driver has a Device Tree binding, we add the
Device Tree informations to describe the SDIO interface available in
the Armada 370/XP SoCs.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-370-xp.dtsi

@@ -137,6 +137,14 @@ rtc@10300 {
 			reg = <0xd0010300 0x20>;
 			interrupts = <50>;
 		};
+
+		mvsdio@d00d4000 {
+			compatible = "marvell,orion-sdio";
+			reg = <0xd00d4000 0x200>;
+			interrupts = <54>;
+			clocks = <&gateclk 17>;
+			status = "disabled";
+		};
 	};
 };