Revert "Move error_code.h into otautil."

This reverts commit 623fe7e701.

Reason for revert: Need to address device-specific modules.

Change-Id: Ib7a4191e7f193dfff49b02d3de76dda856800251

install.cpp

@@ -49,9 +49,9 @@
 #include <ziparchive/zip_archive.h>
 
 #include "common.h"
+#include "error_code.h"
 #include "otautil/SysUtil.h"
 #include "otautil/ThermalUtil.h"
-#include "otautil/error_code.h"
 #include "private/install.h"
 #include "roots.h"
 #include "ui.h"