Item, LED: add fault_identifying association

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Ibc9d0859498fafbc1647179357d5d38926f302d9
diff --git a/yaml/xyz/openbmc_project/Led/Group.interface.yaml b/yaml/xyz/openbmc_project/Led/Group.interface.yaml
index adde5ec..daf4aa7 100644
--- a/yaml/xyz/openbmc_project/Led/Group.interface.yaml
+++ b/yaml/xyz/openbmc_project/Led/Group.interface.yaml
@@ -15,3 +15,10 @@
       reverse_name: identified_by
       required_endpoint_interfaces:
           - xyz.openbmc_project.Inventory.Item
+    - name: fault_identifying
+      description: >
+          Objects that implement LED group can optionally implement the
+          'fault_identifying' association to provide a link back to a Item.
+      reverse_name: fault_identified_by
+      required_endpoint_interfaces:
+          - xyz.openbmc_project.Inventory.Item