ARM: dts: socfpga: enable qspi on the Cyclone5 devkit

Enable the qspi controller on the devkit and add the flash chip.
Signed-off-by: NDinh Nguyen <dinguyen@opensource.altera.com>

arch/arm/boot/dts/socfpga_cyclone5_socdk.dts

@@ -87,6 +87,39 @@
 	status = "okay";
 };
 
+&qspi {
+	status = "okay";
+
+	flash0: n25q00@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "n25q00";
+		reg = <0>;	/* chip select */
+		spi-max-frequency = <100000000>;
+
+		m25p,fast-read;
+		cdns,page-size = <256>;
+		cdns,block-size = <16>;
+		cdns,read-delay = <4>;
+		cdns,tshsl-ns = <50>;
+		cdns,tsd2d-ns = <50>;
+		cdns,tchsh-ns = <4>;
+		cdns,tslch-ns = <4>;
+
+		partition@qspi-boot {
+			/* 8MB for raw data. */
+			label = "Flash 0 Raw Data";
+			reg = <0x0 0x800000>;
+		};
+
+		partition@qspi-rootfs {
+			/* 120MB for jffs2 data. */
+			label = "Flash 0 jffs2 Filesystem";
+			reg = <0x800000 0x7800000>;
+		};
+	};
+};
+
 &usb1 {
 	status = "okay";
 };