Segregate utility methods

This commit segregates utility methods required commonly by both
openpower-read-vpd and ibm-read-vpd from methods only required by
ibm-read-vpd.
All dependency required by utility methods specific to ibm-read-vpd
is not applicable to utility methods required by openpower-read-vpd.

Hence to avoid un-necessary dependency inclusion, this change is
introduced.

Signed-off-by: Sunny Srivastava <sunnsr25@in.ibm.com>
Change-Id: I95f2be27dc0c391a45beb1654a99506317aaa52b
diff --git a/vpd_tool_impl.hpp b/vpd_tool_impl.hpp
index 1ca50b5..4e320b2 100644
--- a/vpd_tool_impl.hpp
+++ b/vpd_tool_impl.hpp
@@ -1,8 +1,8 @@
 #include "config.h"
 
 #include "editor_impl.hpp"
+#include "ibm_vpd_utils.hpp"
 #include "types.hpp"
-#include "utils.hpp"
 
 #include <nlohmann/json.hpp>
 #include <string>