PHAL: Log informational type event for threadStopAll failure

currently threadStopAll command chip-op failure is marked as
unrecoverable type event. This is only called in
poweroff/error path, good chance of chip-op failure in some
use-cases. Since there no service action required related to
this failure converting un-recoverable errors to informational

Tested: Verified PEL

Signed-off-by: Jayanth Othayoth <ojayanth@in.ibm.com>
Change-Id: I04be09046967055579fc64980d81247e975a9c76
diff --git a/procedures/phal/thread_stopall.cpp b/procedures/phal/thread_stopall.cpp
index ac080f4..476b893 100644
--- a/procedures/phal/thread_stopall.cpp
+++ b/procedures/phal/thread_stopall.cpp
@@ -89,9 +89,10 @@
                     pelAdditionalData.emplace_back(
                         "SRC6", std::to_string((index << 16) | cmd));
 
+                    // Create informational error log.
                     createSbeErrorPEL(
                         "org.open_power.Processor.Error.SbeChipOpFailure",
-                        sbeError, pelAdditionalData);
+                        sbeError, pelAdditionalData, Severity::Informational);
                 }
                 else
                 {