ARM: dts: ls1021a-qds: Add node for QSPI flash

Add the missing node for qspi flash.
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Reviewed-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/ls1021a-qds.dts

@@ -286,6 +286,20 @@ tbi0: tbi-phy@8 {
 	};
 };
 
+&qspi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <20000000>;
+		reg = <0>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <4>;
+	};
+};
+
 &sai2 {
 	status = "okay";
 };