Revert "Revert "Move error_code.h into otautil.""

This reverts commit 26436d6d6010d5323349af7e119ff8f34f85c40c to re-land
"Move error_code.h into otautil.".

This way it stops requiring relative path ".." in LOCAL_C_INCLUDES
(uncrypt and edify). Soong doesn't accept non-local ".." in
"local_include_dirs".

This CL needs to land with device-specific module changes (e.g. adding
the dependency on libotautil).

Test: lunch aosp_{angler,bullhead,dragon,fugu,sailfish}-userdebug;
      mmma bootable/recovery
Change-Id: If193241801af2dae73eccd31ce57cd2b81c9fd96
diff --git a/tests/component/updater_test.cpp b/tests/component/updater_test.cpp
index 2a0575a..e35870d 100644
--- a/tests/component/updater_test.cpp
+++ b/tests/component/updater_test.cpp
@@ -39,8 +39,8 @@
 
 #include "common/test_constants.h"
 #include "edify/expr.h"
-#include "error_code.h"
 #include "otautil/SysUtil.h"
+#include "otautil/error_code.h"
 #include "print_sha1.h"
 #include "updater/blockimg.h"
 #include "updater/install.h"