arm: dts: agilex5: Enabled cdns-nand dts setting

Enable cdns-nand dts setting for the socfpga_agilex5
family device.

Signed-off-by: Dinesh Maniyam <dinesh.maniyam@intel.com>
diff --git a/arch/arm/dts/socfpga_agilex5_socdk.dts b/arch/arm/dts/socfpga_agilex5_socdk.dts
index 852e1e5..976656a 100644
--- a/arch/arm/dts/socfpga_agilex5_socdk.dts
+++ b/arch/arm/dts/socfpga_agilex5_socdk.dts
@@ -161,3 +161,22 @@
 		};
 	};
 };
+
+&nand {
+	status = "okay";
+
+	flash1: flash@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0 0x200000>;
+		};
+		partition@200000 {
+			label = "root";
+			reg = <0x200000 0x3fe00000>;
+		};
+	};
+};