util-lib: split out file attribute calls to chattr-util.[ch]
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 85a2d6c..8cf327a 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -41,6 +41,7 @@
 #include "acl-util.h"
 #include "btrfs-util.h"
 #include "capability.h"
+#include "chattr-util.h"
 #include "conf-files.h"
 #include "copy.h"
 #include "escape.h"