arm: dts: ls1088a: add external MDIO nodes

Add the External MDIO1 device node found in the WRIOP global memory
region. This is needed for management of external PHYs.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/dts/fsl-ls1088a.dtsi b/arch/arm/dts/fsl-ls1088a.dtsi
index abc8b21..3149616 100644
--- a/arch/arm/dts/fsl-ls1088a.dtsi
+++ b/arch/arm/dts/fsl-ls1088a.dtsi
@@ -197,4 +197,19 @@
 		method = "smc";
 	};
 
+	emdio1: mdio@8B96000 {
+		compatible = "fsl,ls-mdio";
+		reg = <0x0 0x8B96000 0x0 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
+
+	emdio2: mdio@8B97000 {
+		compatible = "fsl,ls-mdio";
+		reg = <0x0 0x8B97000 0x0 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
 };