ath79: add initial nand support for gl-ar300m

Signed-off-by: Marty E. Plummer <hanetzer@startmail.com>

target/linux/ath79/dts/qca9533_glinet_ar300m_nand.dts

@@ -0,0 +1,67 @@
+/dts-v1/;
+
+#include "qca9533_glinet_ar300m.dtsi"
+
+&spi {
+	status = "okay";
+	num-cs = <1>;
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "winbond,w25q128", "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			partition@1 {
+				label = "u-boot-env";
+				reg = <0x040000 0x010000>;
+			};
+
+			partition@2 {
+				label = "reserved";
+				reg = <0x050000 0xfa0000>;
+			};
+
+			art: partition@3 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+			};
+		};
+	};
+
+	flash@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spinand,mt29f";
+		reg = <1>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "kernel";
+				reg = <0x000000 0x0200000>;
+			};
+
+			partition@1 {
+				label = "ubi";
+				reg = <0x200000 0x7e00000>;
+			};
+		};
+	};
+};