common: code re-org

Move common files under a common/ directory.

Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
Change-Id: I0eaf91d4ee94c1e78228da0c50892f82e91912fa
diff --git a/libpldmresponder/platform_state_effecter.hpp b/libpldmresponder/platform_state_effecter.hpp
index 961aa7f..ba1c9bd 100644
--- a/libpldmresponder/platform_state_effecter.hpp
+++ b/libpldmresponder/platform_state_effecter.hpp
@@ -5,10 +5,10 @@
 #include "libpldm/platform.h"
 #include "libpldm/states.h"
 
+#include "common/utils.hpp"
 #include "libpldmresponder/pdr.hpp"
 #include "pdr_utils.hpp"
 #include "pldmd/handler.hpp"
-#include "utils.hpp"
 
 #include <cstdint>
 #include <map>