mlxsw: spectrum_mr: Pass protocol as part of catchall route params

Since commit c011ec1b ("mlxsw: spectrum: Add the multicast routing
offloading logic") spectrum_mr did not populate the protocol portion of
the catcahall_route_params; mr-tcam logic worked correctly for ipv4
since the enum value for MLXSW_SP_L3_PROTO_IPV4 is '0'.

Explicitly fill the protocol as we'll soon need to differentiate between
ipv4 and ipv6.
Signed-off-by: NYuval Mintz <yuvalm@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c

@@ -848,6 +848,7 @@ struct mlxsw_sp_mr_table *mlxsw_sp_mr_table_create(struct mlxsw_sp *mlxsw_sp,
 		.prio = MLXSW_SP_MR_ROUTE_PRIO_CATCHALL,
 		.key = {
 			.vrid = vr_id,
+			.proto = proto,
 		},
 		.value = {
 			.route_action = MLXSW_SP_MR_ROUTE_ACTION_TRAP,