Logging: add default path and service names

Add default paths and service names from the reference implementation
in phosphor-logging.  The service for logging is expected to be a
singleton and the manager object resides at a fixed path.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia8d4ec354dbbe234109562bd76f1f779922da4e0
diff --git a/yaml/xyz/openbmc_project/Logging/Create.interface.yaml b/yaml/xyz/openbmc_project/Logging/Create.interface.yaml
index 0da55b5..2a1c15f 100644
--- a/yaml/xyz/openbmc_project/Logging/Create.interface.yaml
+++ b/yaml/xyz/openbmc_project/Logging/Create.interface.yaml
@@ -93,3 +93,9 @@
           - name: Custom
             description: >
                 Something other than the above formats
+
+service_names:
+    - default: xyz.openbmc_project.Logging
+
+paths:
+    - instance: /xyz/openbmc_project/logging