sun50i: h5: Add initial Orangepi Zero Plus 2 support

Orangepi Zero Plus 2 is an open-source single-board computer
using the Allwinner h5 SOC.

H5 Orangepi Zero Plus 2 has
- Quad-core Cortex-A53
- 512MB DDR3
- micrSD slot and 8GB eMMC
- Debug TTL UART
- HDMI
- Wifi + BT
- OTG+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 4fffe52..314aee3 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -272,6 +272,11 @@
 S:	Maintained
 F:	configs/orangepi_zero_defconfig
 
+ORANGEPI ZERO PLUS 2 BOARD
+M:	Jagan Teki <jagan@amarulasolutions.com>
+S:	Maintained
+F:	configs/orangepi_zero_plus2_defconfig
+
 ORANGEPI PC 2 BOARD
 M:	Andre Przywara <andre.przywara@arm.com>
 S:	Maintained