linux-phytec-ti

PCI: endpoint: Add "pci-epf-bus" driver

Add "pci-epf-bus" driver that helps to create EPF device from
device tree. This is added in order to define an endpoint function
completely from device tree.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>