xen: add console backend driver. (Gerd Hoffmann)

This patch adds a xenconsole backend driver.  It it based on current
xen-unstable code.  It has been changed to make use of the common
backend driver code.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7221 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/hw/xen_machine_pv.c b/hw/xen_machine_pv.c
index a6070fd..93ab312 100644
--- a/hw/xen_machine_pv.c
+++ b/hw/xen_machine_pv.c
@@ -56,6 +56,7 @@
         fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
         exit(1);
     }
+    xen_be_register("console", &xen_console_ops);
 }
 
 QEMUMachine xenpv_machine = {