arm64: zynqmp: Set status disabled in dtsi

Do not enable smmu via dtsi. Enable it in board file when needed.
Signed-off-by: NNaga Sureshkumar Relli <nagasure@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

arch/arm64/boot/dts/xilinx/zynqmp.dtsi

@@ -339,6 +339,7 @@
 		smmu: smmu@fd800000 {
 			compatible = "arm,mmu-500";
 			reg = <0x0 0xfd800000 0x0 0x20000>;
+			status = "disabled";
 			#global-interrupts = <1>;
 			interrupt-parent = <&gic>;
 			interrupts = <0 155 4>,