cleanup: move fru-device service code into own directory

Improving repository structure for increasing maintainability.

Change-Id: Ie18131d534b750cacb0746450377a37a880b0dbe
Signed-off-by: Christopher Meis <christopher.meis@9elements.com>
diff --git a/test/test_fru-utils.cpp b/test/test_fru-utils.cpp
index 9d154f6..7571adc 100644
--- a/test/test_fru-utils.cpp
+++ b/test/test_fru-utils.cpp
@@ -1,4 +1,4 @@
-#include "fru_utils.hpp"
+#include "fru_device/fru_utils.hpp"
 
 #include <algorithm>
 #include <array>