net: bridge: Introduce BROPT_FDB_LOCAL_VLAN_0

The following patches will gradually introduce the ability of the bridge
to look up local FDB entries on VLAN 0 instead of using the VLAN indicated
by a packet.

In this patch, just introduce the option itself, with which the feature
will be linked.

Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: Petr Machata <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Link: https://patch.msgid.link/ab85e33ef41ed19a3deaef0ff7da26830da30642.1757004393.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <[email protected]>

Author: pmachata

net/bridge/br_private.h

@@ -487,6 +487,7 @@ enum net_bridge_opts {
 	BROPT_MCAST_VLAN_SNOOPING_ENABLED,
 	BROPT_MST_ENABLED,
 	BROPT_MDB_OFFLOAD_FAIL_NOTIFICATION,
+	BROPT_FDB_LOCAL_VLAN_0,
 };
 
 struct net_bridge {