Export util headers for openpower-hw-diags

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: I69cebf3d1637189ee4fa2c5f03725d51d89618c1
diff --git a/src/register/hei_hardware_register.hpp b/src/register/hei_hardware_register.hpp
index fb39d1e..5147edf 100644
--- a/src/register/hei_hardware_register.hpp
+++ b/src/register/hei_hardware_register.hpp
@@ -1,7 +1,7 @@
 #pragma once
 
-#include <hei_bit_string.hpp>
 #include <register/hei_register.hpp>
+#include <util/hei_bit_string.hpp>
 #include <util/hei_includes.hpp>
 
 namespace libhei