PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry

In order to be able to provide correct driver_data for pci_epf device,
a separate configfs entry for each pci_epf_device_id table entry in
pci_epf_driver is required.

Add support to create configfs entry for each pci_epf_device_id
table entry here.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index f7d6f48..4e77649 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -72,7 +72,7 @@ struct pci_epf_ops {
  * @driver: PCI EPF driver
  * @ops: set of function pointers for performing EPF operations
  * @owner: the owner of the module that registers the PCI EPF driver
- * @group: configfs group corresponding to the PCI EPF driver
+ * @epf_group: list of configfs group corresponding to the PCI EPF driver
  * @id_table: identifies EPF devices for probing
  */
 struct pci_epf_driver {
@@ -82,7 +82,7 @@ struct pci_epf_driver {
 	struct device_driver	driver;
 	struct pci_epf_ops	*ops;
 	struct module		*owner;
-	struct config_group	*group;
+	struct list_head	epf_group;
 	const struct pci_epf_device_id	*id_table;
 };