arm: xilinx: Add missing dual parallel flash description

Describe flash memories based on the latest DT binding.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/cddf2909d0445eba08b998d42ffc31c1fa3132b9.1698045694.git.michal.simek@amd.com
diff --git a/arch/arm/dts/zynq-zc770-xm013.dts b/arch/arm/dts/zynq-zc770-xm013.dts
index 21902fb..582aa1f 100644
--- a/arch/arm/dts/zynq-zc770-xm013.dts
+++ b/arch/arm/dts/zynq-zc770-xm013.dts
@@ -61,10 +61,11 @@
 
 &qspi {
 	status = "okay";
-	num-cs = <1>;
+	num-cs = <2>;
 	flash@0 {
 		compatible = "n25q128a11", "jedec,spi-nor";
-		reg = <0x0>;
+		reg = <0>, <1>;
+		parallel-memories = /bits/ 64 <0x1000000 0x1000000>; /* 16MB */
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <4>;
 		spi-max-frequency = <50000000>;