Axxia AXM55xx device tree bindings

Boards using the AXM55xx SoC need to have the following properties:

Required root node property:

  - compatible = "lsi,axm5516"

Boards:

  LSI AXM5516 Validation board (Amarillo)
	compatible = "lsi,axm5516-amarillo", "lsi,axm5516"
