dt-bindings: marvell: Convert the SoC compatibles description to YAML

Convert the file detailing Marvell EBU compatibles to json-schema.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>