This commit adds the Device Tree binding documentation that allows to
describe the PCIe controller found in Marvell Armada 7K/8K SoCs.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: NRob Herring <rob@kernel.org>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>