bridge: Add multicast start/stop hooks

This patch hooks up the bridge start/stop and add/delete/disable
port functions to the new multicast module.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/bridge/br_device.c
Simple merge

diff --cc net/bridge/br_if.c
Simple merge

diff --cc net/bridge/br_stp.c
Simple merge

diff --cc net/bridge/br_stp_if.c
Simple merge