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/Method.cpp b/Method.cpp
index d78f8b9..d9a6a8c 100644
--- a/Method.cpp
+++ b/Method.cpp
@@ -17,10 +17,11 @@
 #include "Method.h"
 
 #include "Annotation.h"
-#include "Formatter.h"
 #include "ScalarType.h"
 #include "Type.h"
 
+#include <hidl-util/Formatter.h>
+
 namespace android {
 
 Method::Method(const char *name,