km/spi: add SPI configuration to KM Kirkwood device tree

In order to migrate the SPI flash interface to the driver model, the SPI
configuration needs to be added in the KM Kirkwood device tree file.
Signed-off-by: NPascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: NHolger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: NStefan Roese <sr@denx.de>

arch/arm/dts/kirkwood-km_kirkwood.dts

@@ -13,6 +13,10 @@
 		device_type = "memory";
 		reg = <0x00000000 0x08000000>;
 	};
+
+	aliases {
+		spi0 = &spi0;
+	};
 };
 
 &mdio {
@@ -29,3 +33,21 @@
 		phy-handle = <&ethphy0>;
 	};
 };
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "st,m25p80", "jedec,spi-nor", "spi-flash";
+		reg = <0>;
+		spi-max-frequency = <33000000>;
+		mode = <3>;
+
+		partition@uboot {
+			reg = <0x000000 0x0c0000>;
+			label = "uboot";
+		};
+	};
+};