arm: dt: zynq: Add support for the zc706 platform

Add a DT fragment for the zc706 Zynq platform and a corresponding
target to the Makefile.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b9f7121..2aecf7e 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -206,7 +206,8 @@
 	wm8505-ref.dtb \
 	wm8650-mid.dtb \
 	wm8850-w70v2.dtb
-dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb
+dtb-$(CONFIG_ARCH_ZYNQ) += zynq-zc702.dtb \
+	zynq-zc706.dtb
 
 targets += dtbs
 targets += $(dtb-y)