netdevsim: implement fake flash updating with notifications

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netdevsim/netdevsim.h

@@ -157,6 +157,7 @@ struct nsim_dev {
 	struct netdev_phys_item_id switch_id;
 	struct list_head port_list;
 	struct mutex port_list_lock; /* protects port list */
+	bool fw_update_status;
 };
 
 int nsim_dev_init(void);