arm64: dts: ls208xa: Update qspi node properties for LS2088ARDB

LS2088ADB has one spansion flash s25fs512s of size 64M.

Add qspi dts entry for the board using compatibles as "jedec,spi-nor" to
probe flash successfully. Also, align properties with other board dts
properties.

Use dt-bindings constants in interrupts instead of using numbers.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi

@@ -108,7 +108,15 @@ dflash0: n25q512a@0 {
 };
 
 &qspi {
-	status = "disabled";
+	status = "okay";
+
+	s25fs512s0: flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <50000000>;
+		reg = <0>;
+	};
 };
 
 &sata0 {

arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi

@@ -618,16 +618,16 @@ ifc: ifc@2240000 {
 		};
 
 		qspi: spi@20c0000 {
-			status = "disabled";
 			compatible = "fsl,ls2080a-qspi";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x0 0x20c0000 0x0 0x10000>,
 			      <0x0 0x20000000 0x0 0x10000000>;
 			reg-names = "QuadSPI", "QuadSPI-memory";
-			interrupts = <0 25 0x4>; /* Level high type */
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
 			clock-names = "qspi_en", "qspi";
+			status = "disabled";
 		};
 
 		pcie1: pcie@3400000 {