open_power: PEL: Added the GetBMCLogIdFromPELId method

In OpenPOWER based system, the application may need to get
the BMC event log id by using the PEL id (aka Entry ID (EID)
which is a unique id in the PEL) so added the interface for the same.

Signed-off-by: Ramesh Iyyar <rameshi1@in.ibm.com>
Change-Id: Ie0efdde3783b5e217779f01bfc654ce7199c381d
diff --git a/yaml/org/open_power/Logging/PEL.interface.yaml b/yaml/org/open_power/Logging/PEL.interface.yaml
index ae5b7ee..bf7deb5 100644
--- a/yaml/org/open_power/Logging/PEL.interface.yaml
+++ b/yaml/org/open_power/Logging/PEL.interface.yaml
@@ -131,6 +131,23 @@
     errors:
        - xyz.openbmc_project.Common.Error.InvalidArgument
 
+  - name: GetBMCLogIdFromPELId
+    description: >
+        Returns the BMC event log id based on the given PEL id (aka
+        Entry ID (EID)).
+    parameters:
+      - name: pelId
+        type: uint32
+        description: >
+          The PEL id to retrieve the BMC event log id.
+    returns:
+      - name: bmcLogId
+        type: uint32
+        description: >
+            The BMC event log id of the PEL.
+    errors:
+       - xyz.openbmc_project.Common.Error.InvalidArgument
+
 enumerations:
   - name: RejectionReason
     description: >