Add Khadas VIM3 board and A311D SoC support
Amlogic A311D can be found on multiple devices such as the Khadas VIM3 board.
Add SoC definition for A311D and add Khadas VIM3 support
A (WIP) wiki page can be found here:
Signed-off-by: Mattijs Korpershoek mattijs.korpershoek@gmail.com