sun50i: a64: Add Oceanic 5205 5inMFD initial support

Oceanic 5205 5inMFD is a 5 inch Multi function display baseboard
designed to mount SoPine SOM.

Key features:
- Allwinner A64 Cortex-A53
- Mali-400MP2 GPU
- AXP803 PMIC
- 2GB DDR3 RAM
- SD Slot
- SPI-NOR flash
- EMAC, RTL8211E
- MCP2515 CAN
- 4-lane, MIPI-DSI panel
- Goodix 911 CTP
- USB Host
- 12V DC power supply

Linux commit details about the sun50i-a64-oceanic-5205-5inmfd.dts sync:
"arm64: allwinner: a64: Add Oceanic 5205 5inMFD initial support"
(sha1: 00f7980a3bd53d12abc34f68146a8eed0e894248)

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 8e2f90f..7f96d2b 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -341,6 +341,11 @@
 S:	Maintained
 F:	configs/Nintendo_NES_Classic_Edition_defconfig
 
+OCEANIC 5205 5INMFD BOARD
+M:	Jagan Teki <jagan@amarulasolutions.com>
+S:	Maintained
+F:	configs/oceanic_5205_5inmfd_defconfig
+
 OLIMEX A20-SOM204 BOARD
 M:	Stefan Mavrodiev <stefan@olimex.com>
 S:	Maintained