Revert "Revert "Split out libhidl-gen and libhidl-gen-utils.""

Shared code between hidl-gen, c2hal, and VTS.

Also build for device, as we might use libhidl-gen reflectively in
future (for profiling and instrumentation).

Change-Id: Ia56901f4afbc12b7c2abee693e0ebea97ba76a8b
diff --git a/FQName.cpp b/FQName.cpp
index 08ceccb..a477cb2 100644
--- a/FQName.cpp
+++ b/FQName.cpp
@@ -15,8 +15,8 @@
  */
 
 #include "FQName.h"
-#include "StringHelper.h"
 
+#include <hidl-util/StringHelper.h>
 #include <android-base/logging.h>
 #include <iostream>
 #include <regex>