PEL: Add next level of support maintenance procedure

Maintenance procedures are part of the PEL callout section.
This procedure is indicates isolation not possible, contact
your next level of support.

Signed-off-by: Jayanth Othayoth <ojayanth@in.ibm.com>
Change-Id: If1d481604e411947e47cb7c9c20d79e938c65db3
diff --git a/extensions/openpower-pels/pel_values.cpp b/extensions/openpower-pels/pel_values.cpp
index 368dbe7..256cb63 100644
--- a/extensions/openpower-pels/pel_values.cpp
+++ b/extensions/openpower-pels/pel_values.cpp
@@ -217,7 +217,9 @@
  *        to their actual names.
  */
 const std::map<std::string, std::string> maintenanceProcedures = {
-    {"bmc_code", "BMC0001"}};
+    {"bmc_code", "BMC0001"},
+    // Isolation not possible, please contact your next level of support
+    {"next_level_support", "BMC0002"}};
 
 /**
  * @brief Map of the registry names for the symbolic FRUs to their