Add device tree for RD-AC3X-48G4X2XL board. This has a Armada 382 SoC on
a interposer board connected to a baseboard with a Prestera AC3X ASIC
connected via PCI.
Signed-off-by: NAryan Srivastava <aryan.srivastava@alliedtelesis.co.nz>
Reviewed-by: NChris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NGregory CLEMENT <gregory.clement@bootlin.com>