arm64: dts: ls1046a: Add QSPI node for ls1046afrwy

This board has a single 64MB mt25qu512a flash.
QUAD I/O read and single I/O write is tested.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/fsl-ls1046a-frwy.dts

@@ -112,6 +112,20 @@ nand@0,0 {
 
 };
 
+&qspi {
+	status = "okay";
+
+	mt25qu512a0: flash@0 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+		reg = <0>;
+	};
+};
+
 #include "fsl-ls1046-post.dtsi"
 
 &fman0 {