sun50i: h5: Add initial NanoPi NEO2 support

NanoPi NEO2 is designed and developed by FriendlyElec
using the Allwinner 64-bit H5 SOC.

NanoPi Neo2 key features
- Allwinner H5, Quad-core 64-bit Cortex-A53
- 512MB DDR3 RAM
- microSD slot
- 10/100/1000M Ethernet
- Serial Debug Port
- 5V 2A DC MicroUSB power-supply

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 77d8d17..e9f3e35 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -257,6 +257,11 @@
 S:	Maintained
 F:	configs/nanopi_neo_defconfig
 
+NANOPI-NEO2 BOARD
+M:	Jagan Teki <jagan@amarulasolutions.com>
+S:	Maintained
+F:	configs/nanopi_neo2_defconfig
+
 NANOPI-NEO-AIR BOARD
 M:	Jelle van der Waa <jelle@vdwaa.nl>
 S:	Maintained