files: Print the state of files restoring transition

It's confusing to see the output like

 | Got fd for 3
 | Got fd for 3

Better to point what is going on

 | Got fd for 3 (state -> 0)
 | Got fd for 3 (state -> 1)
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

files.c

@@ -424,7 +424,7 @@ static int open_fdinfo(int pid, struct fdinfo_entry *fe, int *fdinfo_fd, int sta
 	if (move_img_fd(fdinfo_fd, fe->fd))
 		return -1;
 
-	pr_info("\t%d: Got fd for %d\n", pid, fe->fd);
+	pr_info("\t%d: Got fd for %d (state -> %d)\n", pid, fe->fd, state);
 
 	switch (state) {
 	case FD_STATE_PREP: