arch: arm: dts: fsl-lx2160a.dtsi: add an 'soc' node

The u-boot dts for these boards do not have an soc node, unlike its
Linux counterpart. This patch just adds the soc node as seen in Linux,
the next patches will move some nodes under it.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/dts/fsl-lx2160a.dtsi b/arch/arm/dts/fsl-lx2160a.dtsi
index 57c7d3e..08f160f 100644
--- a/arch/arm/dts/fsl-lx2160a.dtsi
+++ b/arch/arm/dts/fsl-lx2160a.dtsi
@@ -27,6 +27,14 @@
 		clock-output-names = "sysclk";
 	};
 
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+		dma-ranges = <0x0 0x0 0x0 0x0 0x10000 0x00000000>;
+	};
+
 	crypto: crypto@8000000 {
 		compatible = "fsl,sec-v5.0", "fsl,sec-v4.0";
 		fsl,sec-era = <10>;