PEL: Use lg2 in PLMD related files

There are a lot of debug traces in the code that uses PLDM to send PELs
up to the OS.  Convert the files that deal with that to lg2 so that the
debug traces can be seen by just running phosphor-log-manager from the
command line where lg2 will print to the console as opposed to having to
change the journal priority in an overlay file.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I818bab1bf636fe83d3e7ff64c1bc31ad5e09705e
diff --git a/extensions/openpower-pels/host_interface.hpp b/extensions/openpower-pels/host_interface.hpp
index ee818f3..11ebe87 100644
--- a/extensions/openpower-pels/host_interface.hpp
+++ b/extensions/openpower-pels/host_interface.hpp
@@ -4,7 +4,7 @@
 
 #include <stdint.h>
 
-#include <phosphor-logging/log.hpp>
+#include <phosphor-logging/lg2.hpp>
 #include <sdeventplus/event.hpp>
 #include <sdeventplus/source/io.hpp>
 
@@ -152,10 +152,9 @@
             }
             catch (const std::exception& e)
             {
-                using namespace phosphor::logging;
-                log<level::ERR>(
-                    "Host iface response callback threw an exception",
-                    entry("ERROR=%s", e.what()));
+                lg2::error(
+                    "Host iface response callback threw an exception: {EX}",
+                    "EX", e);
             }
         }
     }