OCC: Change OCC timeout elog severity

Presently we are logging informational event if OCC timeout happens
during boot. Change the severity to Unrecoverable Error.

Also updated the elog description.

Sample Output:
|------------------------------------------------------------------------------|
| Entry Id      Commit Time      SubSystem                        Committed by |
| Platform Id   State            Event Severity                      Ascii Str |
|------------------------------------------------------------------------------|
| 0x53A530C8 10/09/2014 10:13:06 CEC Hardware Subsystem                     OC |
| 0xB0000001 Sent to Hypervisor  Unrecoverable Error                  BB82C013 |
|------------------------------------------------------------------------------|

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Acked-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Merge branch 'release-2.1.1'
CUPD: Log LID ID in elog if size crosses the limit

..so that it makes easy to find the culprit LID easily.

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>