dt-bindings: mtd: partitions: Define "#{address,size}-cells" in specific schemas

dt-bindings: mtd: partitions: Define "#{address,size}-cells" in specific schemas

Whether "#address-cells" and "#size-cells" are used or not depends on
the specific partition type, so drop them from partitions.yaml and
define them in the specific partition schemas as needed.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>