Fix for Redfish event when BIOS attributes changed

No Redfish event logged when set of BIOS attributes is changed.

Added "BIOSAttributesChanged" event to log in Redfish.

Tested:
1. PATCH: /redfish/v1/Systems/system/Bios/Settings
Body:
{
    "data": {
        "serialDebugMsgLvl": "0x2"
}}
Response: Success
2. Do BIOS reset.
3. Check for the redfish event in redfish logs.
GET: /redfish/v1/Systems/system/LogServices/EventLog/Entries
Response:
{
    "@odata.id": "/redfish/v1/Systems/system/LogServices/EventLog/Entries/32635",
    "@odata.type": "#LogEntry.v1_8_0.LogEntry",
    "Created": "1970-01-01T09:03:55+00:00",
    "EntryType": "Event",
    "Id": "32635",
    "Message": "Set of BIOS Attributes changed.",
    "MessageArgs": [],
    "MessageId": "OpenBMC.0.1.BIOSAttributesChanged",
    "Name": "System Event Log Entry",
    "Severity": "OK"
}

Signed-off-by: Snehalatha Venkatesh <snehalathax.v@intel.com>
Change-Id: Id88c21d894436a9c89e99237266827046cc7757a
diff --git a/src/ipmi_to_redfish_hooks.cpp b/src/ipmi_to_redfish_hooks.cpp
index 206b9e6..f4c2fa5 100644
--- a/src/ipmi_to_redfish_hooks.cpp
+++ b/src/ipmi_to_redfish_hooks.cpp
@@ -266,6 +266,9 @@
                         case 0x01:
                             messageID += ".BIOSBoot";
                             break;
+                        case 0x09:
+                            messageID += ".BIOSAttributesChanged";
+                            break;
                         default:
                             return defaultMessageHook(ipmiRaw);
                             break;