sunxi: h3: Add initial ZeroPi support

ZeroPi is a new board of high performance with low cost
designed by FriendlyElec., using the Allwinner H3 SOC.

ZeroPi features
- Allwinner H3, Quad-core Cortex-A7@1.2GHz
- 256MB/512MB DDR3 RAM
- microsd slot
- 10/100/1000Mbps Ethernet
- Debug Serial Port
- DC 5V/2A power-supply

Signed-off-by: Yu-Tung Chang <mtwget@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 76eba2a..4fc2607 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -529,3 +529,9 @@
 M:	Peter Korsgaard <peter@korsgaard.com>
 S:	Maintained
 F:	configs/Yones_Toptech_BS1078_V2_defconfig
+
+ZEROPI BOARD
+M:	Yu-Tung Chang <mtwget@gmail.com>
+S:	Maintained
+F:	configs/zeropi_defconfig
+F:	arch/arm/dts/sun8i-h3-zeropi.dts