boards.h: Ignore migration for SMBus devices on older machines

Migration capability is being added for pm_smbus and SMBus devices.
This change will allow backwards compatibility to be kept when
migrating back to an old qemu version.  Add a bool to the machine
class tho keep smbus migration from happening.  Future changes
will use this.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 05f9f45c3d..21212f0859 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -206,6 +206,7 @@ struct MachineClass {
     void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
                                  int nb_nodes, ram_addr_t size);
     bool ignore_boot_device_suffixes;
+    bool smbus_no_migration_support;
 
     HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
                                            DeviceState *dev);