ARM64: zynqmp: Use 64bit size cell format for memory node

Enable option to support more then 4GB memories in single size block.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynqmp-ep108.dts b/arch/arm/dts/zynqmp-ep108.dts
index 1928b0b..7fa0694 100644
--- a/arch/arm/dts/zynqmp-ep108.dts
+++ b/arch/arm/dts/zynqmp-ep108.dts
@@ -33,7 +33,7 @@
 
 	memory {
 		device_type = "memory";
-		reg = <0x0 0x0 0x40000000>;
+		reg = <0x0 0x0 0x0 0x40000000>;
 	};
 };