arm64: dts: zynqmp: Add support for Avnet Ultra96 rev1 board

Avnet Ultra96 rev1 board is commercialized Xilinx zcu100 revC/D
internal board. The patch is reusing zcu100 revC files but changing
model description and compatible strings which are used for example by
libmraa.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm64/boot/dts/xilinx/Makefile

 # SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_ZYNQMP) += avnet-ultra96-rev1.dtb
 dtb-$(CONFIG_ARCH_ZYNQMP) += zynqmp-zc1232-revA.dtb
 dtb-$(CONFIG_ARCH_ZYNQMP) += zynqmp-zc1254-revA.dtb
 dtb-$(CONFIG_ARCH_ZYNQMP) += zynqmp-zc1275-revA.dtb

arch/arm64/boot/dts/xilinx/avnet-ultra96-rev1.dts

+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * dts file for Avnet Ultra96 rev1
+ *
+ * (C) Copyright 2018, Xilinx, Inc.
+ *
+ * Michal Simek <michal.simek@xilinx.com>
+ */
+
+/dts-v1/;
+
+#include "zynqmp-zcu100-revC.dts"
+
+/ {
+	model = "Avnet Ultra96 Rev1";
+	compatible = "avnet,ultra96-rev1", "avnet,ultra96",
+		     "xlnx,zynqmp-zcu100-revC", "xlnx,zynqmp-zcu100",
+		     "xlnx,zynqmp";
+};