scope hei_includes.hpp for internal use

This file should not be included in any headers consumed by the user
application.

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: Ifc3ff2faa03b96c8a7ace2feb7132d74df24f5cc
diff --git a/src/register/hei_hardware_register.cpp b/src/register/hei_hardware_register.cpp
index 2aa1544..56a1afd 100644
--- a/src/register/hei_hardware_register.cpp
+++ b/src/register/hei_hardware_register.cpp
@@ -1,7 +1,7 @@
 #include <hei_bit_string.hpp>
-#include <hei_includes.hpp>
 #include <hei_user_interface.hpp>
 #include <register/hei_hardware_register.hpp>
+#include <util/hei_includes.hpp>
 
 namespace libhei
 {