msg_registry: Add CPUMisMatch message entry

Add "CPUMisMatch" message entry for CPU mismatch events

Tested:
1. Redfish validator - passed for this new addition
2. Verified in Redfish, Memory message populated properly
   Redfish URI:
   GET: https://<BMC IP>/redfish/v1/Systems/system/LogServices/EventLog
                   /Entries
   {
      "@odata.id": "/redfish/v1/Systems/system/LogServices/EventLog/
                    Entries/1584354165",
      "@odata.type": "#LogEntry.v1_4_0.LogEntry",
      "Created": "2020-03-16T10:22:45+00:00",
      "EntryType": "Event",
      "Id": "1584354165",
      "Message": "CPU 1 Mismatch.",
      "MessageArgs": [
        "1"
      ],
      "MessageId": "OpenBMC.0.1.CPUMisMatch",
      "Name": "System Event Log Entry",
      "Severity": "Critical"
    },
    {
      "@odata.id": "/redfish/v1/Systems/system/LogServices/EventLog/
                    Entries/1584354165_1",
      "@odata.type": "#LogEntry.v1_4_0.LogEntry",
      "Created": "2020-03-16T10:22:45+00:00",
      "EntryType": "Event",
      "Id": "1584354165_1",
      "Message": "CPU 2 Mismatch.",
      "MessageArgs": [
        "2"
      ],
      "MessageId": "OpenBMC.0.1.CPUMisMatch",
      "Name": "System Event Log Entry",
      "Severity": "Critical"
    },

Signed-off-by: Snehalatha V <SnehalathaX.V@intel.com>
Signed-off-by: jayaprakash Mutyala <mutyalax.jayaprakash@intel.com>
Change-Id: I6f5bbdab6bdce20e0d6401ec0b65567bdb8a48af
diff --git a/redfish-core/include/registries/openbmc_message_registry.hpp b/redfish-core/include/registries/openbmc_message_registry.hpp
index bb50b12..8896e64 100644
--- a/redfish-core/include/registries/openbmc_message_registry.hpp
+++ b/redfish-core/include/registries/openbmc_message_registry.hpp
@@ -312,6 +312,16 @@
                      {"string"},
                      "None.",
                  }},
+    MessageEntry{"CPUMismatch",
+                 {
+                     "Indicates that the specified CPU power/current "
+                     "rating is incompatible with the board.",
+                     "CPU %1 Mismatch.",
+                     "Critical",
+                     1,
+                     {"number"},
+                     "Install the supported CPU.",
+                 }},
     MessageEntry{"CPUThermalTrip",
                  {
                      "Indicates that the specified CPU thermal "