arm: zynq: add support for the zybo z7 board

The board is manufactured by Digilent
Main features:
- Soc: XC7Z010 (Z7-10) or XC7Z020 (Z7-20)
- RAM: 1 GB DDR3L
- FLASH: 16 MB QSPI
- 1 Gbps Ethernet
- USB 2.0
- microSD slot
- Pcam camera connector
- HDMI Tx and Rx
- Audio codec: stereo out, stereo in, mic
- 5 (Z7-10) or 6 (Z7-20) Pmod ports
- 6 push-buttons, 4 switches, 5 LEDs
- 1 (Z7-10) or 2 (Z7-20) RGB LEDs

Signed-off-by: Luis Araneda <luaraneda@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 89032bb..797e575 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -149,7 +149,8 @@
 	zynq-zc770-xm013.dtb \
 	zynq-zed.dtb \
 	zynq-zturn.dtb \
-	zynq-zybo.dtb
+	zynq-zybo.dtb \
+	zynq-zybo-z7.dtb
 dtb-$(CONFIG_ARCH_ZYNQMP) += \
 	zynqmp-mini-emmc0.dtb			\
 	zynqmp-mini-emmc1.dtb			\