lg2: convert state-manager

This converts the rest of phosphor-state-manager over to the lg2
interface.

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I3878ec950b6a2b1ada93544cc021cecf14edfb46
diff --git a/settings.cpp b/settings.cpp
index 9a7879a..ff5d36f 100644
--- a/settings.cpp
+++ b/settings.cpp
@@ -3,12 +3,14 @@
 #include "xyz/openbmc_project/Common/error.hpp"
 
 #include <phosphor-logging/elog-errors.hpp>
-#include <phosphor-logging/log.hpp>
+#include <phosphor-logging/lg2.hpp>
 #include <sdbusplus/exception.hpp>
 
 namespace settings
 {
 
+PHOSPHOR_LOG2_USING;
+
 using namespace phosphor::logging;
 using namespace sdbusplus::xyz::openbmc_project::Common::Error;
 
@@ -38,14 +40,13 @@
         response.read(result);
         if (result.empty())
         {
-            log<level::ERR>("Invalid response from mapper");
+            error("Invalid response from mapper");
             elog<InternalFailure>();
         }
     }
     catch (const sdbusplus::exception::exception& e)
     {
-        log<level::ERR>("Error in mapper GetSubTree",
-                        entry("ERROR=%s", e.what()));
+        error("Error in mapper GetSubTree: {ERROR}", "ERROR", e);
         elog<InternalFailure>();
     }
 
@@ -113,14 +114,13 @@
     }
     catch (const sdbusplus::exception::exception& e)
     {
-        log<level::ERR>("Error in mapper GetObject",
-                        entry("ERROR=%s", e.what()));
+        error("Error in mapper GetObject: {ERROR}", "ERROR", e);
         elog<InternalFailure>();
     }
 
     if (result.empty())
     {
-        log<level::ERR>("Invalid response from mapper");
+        error("Invalid response from mapper");
         elog<InternalFailure>();
     }