qemu-char: Rename opened to be_open

Rename the opened variable to be_open to reflect that it contains the
opened state of the backend.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Message-id: 1364292483-16564-2-git-send-email-hdegoede@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/include/char/char.h b/include/char/char.h
index 5c3a7a5..90443fc 100644
--- a/include/char/char.h
+++ b/include/char/char.h
@@ -74,7 +74,7 @@
     int idle_tag;
     char *label;
     char *filename;
-    int opened;
+    int be_open;
     int avail_connections;
     QemuOpts *opts;
     QTAILQ_ENTRY(CharDriverState) next;