arm64: dts: marvell: Enable Armada-8040-DB CPS SPI1

Add the DT node enabling Armada-8040-DB CPS SPI controller driver.

Add the SPI NAND flash device connected on the bus. Fill the MTD
partitions layout.
Signed-off-by: NChristine Gharzuzi <chrisg@marvell.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

arch/arm64/boot/dts/marvell/armada-8040-db.dts

@@ -223,6 +223,37 @@
 	clock-frequency = <100000>;
 };
 
+&cps_spi1 {
+	status = "okay";
+
+	spi-flash@0 {
+		#address-cells = <0x1>;
+		#size-cells = <0x1>;
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-max-frequency = <20000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "Boot";
+				reg = <0x0 0x200000>;
+			};
+			partition@200000 {
+				label = "Filesystem";
+				reg = <0x200000 0xd00000>;
+			};
+			partition@f00000 {
+				label = "Boot_2nd";
+				reg = <0xf00000 0x100000>;
+			};
+		};
+	};
+};
+
 /* CON4 on CP1 expansion */
 &cps_sata0 {
 	status = "okay";