Merge branch 'bridge-new-mdb-attr' into next

Ido Schimmel  says:

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Add support for new MDB attributes and replace command.

See kernel merge commit 8150f0cfb24f ("Merge branch
'bridge-mcast-extensions-for-evpn'") for background and motivation.

Patches #1-#2 are preparations.

Patches #3-#5 add support for new MDB attributes: Filter mode, source
list and routing protocol.

Patch #6 adds replace support.

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Signed-off-by: David Ahern <dsahern@kernel.org>