dts: arm: xilinx: zynqmp: mark flash0 node as disabled

Currently ZynqMP board setups do not appear to be using the flash0 node
which is used for running in XIP mode from QSPI flash storage. Mark this
node as disabled to avoid tripping up the
drivers.flash.common.disable_spi_nor tests, which would otherwise try to
build with FLASH enabled and SPI_NOR disabled.

Signed-off-by: Robert Hancock <robert.hancock@calian.com>

Author: robhancocksed

dts/arm/xilinx/zynqmp.dtsi

@@ -18,6 +18,7 @@
 		flash0: flash@c0000000 {
 			compatible = "soc-nv-flash";
 			reg = <0xc0000000 DT_SIZE_M(32)>;
+			status = "disabled";
 		};
 
 		sram0: memory@0 {