PEL: Create FailingMTMS section for new PELs

When a PEL is created from an OpenBMC event log, add the FailingMTMS
section to the PEL. This contains the machine type, model, and serial
number fields.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I8d08e6dda00260efebd2c6ac165270d2aaf98d67
diff --git a/extensions/openpower-pels/failing_mtms.cpp b/extensions/openpower-pels/failing_mtms.cpp
index 1b15c16..b60ce31 100644
--- a/extensions/openpower-pels/failing_mtms.cpp
+++ b/extensions/openpower-pels/failing_mtms.cpp
@@ -20,6 +20,8 @@
     _header.version = failingMTMSVersion;
     _header.subType = 0;
     _header.componentID = static_cast<uint16_t>(ComponentID::phosphorLogging);
+
+    _valid = true;
 }
 
 FailingMTMS::FailingMTMS(Stream& pel)