pci: mediatek: add support for upstream split PCIe node

Add support for upstream linux split PCIe node.

Upstream linux have an alternative way to declare PCIe nodes that splits
them in dedicated nodes for each line instead of putting them all in one
node.

Detect this by checking if the mediatek,generic-pciecfg node is passed
as it's used to reference the common address for all the PCIe lines.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
1 file changed