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/tool/pldm_bios_cmd.cpp b/tool/pldm_bios_cmd.cpp
index 3e554b1..ba40dea 100644
--- a/tool/pldm_bios_cmd.cpp
+++ b/tool/pldm_bios_cmd.cpp
@@ -3,9 +3,9 @@
 #include "libpldm/bios_table.h"
 #include "libpldm/utils.h"
 
-#include "bios_utils.hpp"
+#include "common/bios_utils.hpp"
+#include "common/utils.hpp"
 #include "pldm_cmd_helper.hpp"
-#include "utils.hpp"
 
 #include <map>
 #include <optional>