YAML for event/error logging interfaces

Machine parseable DBus specification for the logging features.
The Manager interface implements the Commit method to
write entries to flash.

Change-Id: Id1e9e2475427a7358acfbe829733977709de05bc
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/xyz/openbmc_project/Logging/Internal/Manager.interface.yaml b/xyz/openbmc_project/Logging/Internal/Manager.interface.yaml
new file mode 100644
index 0000000..97ed3c9
--- /dev/null
+++ b/xyz/openbmc_project/Logging/Internal/Manager.interface.yaml
@@ -0,0 +1,19 @@
+description: >
+    Implement to provide event/error logging management features.
+    This interface should be instantiated for the phosphor::logging namespace,
+    and only one is required.
+methods:
+    - name: Commit
+      description: >
+          Write the requested error/event entry with its associated metadata
+          fields to flash.
+      parameters:
+        - name: transactionId
+          type: uint64
+          description: >
+              The unique identifier of the journal entry(ies) to be committed.
+        - name: errMsg
+          type: string
+          description: >
+              The error exception message associated with the error
+              event log to be committed.