dt-bindings: arm: amlogic: add Amlogic A311D2 bindings

Add bindings for the Khadas Vim4 board, using A311D2 Soc from Amlogic T7
family chip.

Signed-off-by: Lucas Tanure <tanure@linux.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230629073419.207886-2-tanure@linux.com


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>