ARM: dts: msm: add MHI NET devicetree node for sdxprairie

Add initial devicetree node to support MHI NET based devices
over PCIe on sdxprairie.

Change-Id: Iec2fdb20b0d18c7ca709a97cf99517a287459c12
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>

arch/arm64/boot/dts/qcom/sa515m-ccard-pcie-ep.dts

@@ -44,3 +44,7 @@
 &mhi_device {
 	status = "ok";
 };
+
+&mhi_net_device {
+	status = "okay";
+};

arch/arm64/boot/dts/qcom/sdxprairie-pcie-ep-mtp.dtsi

@@ -40,3 +40,7 @@
 &mhi_device {
 	status = "ok";
 };
+
+&mhi_net_device {
+	status = "okay";
+};

arch/arm64/boot/dts/qcom/sdxprairie.dtsi

@@ -1361,6 +1361,12 @@
 		status = "disabled";
 	};
 
+	mhi_net_device: qcom,mhi_net_dev {
+		compatible = "qcom,msm-mhi-dev-net";
+		qcom,mhi-ethernet-interface;
+		status = "disabled";
+	};
+
 	sdhc_1: sdhci@8804000 {
 		compatible = "qcom,sdhci-msm-v5";
 		reg = <0x8804000 0x1000>;