docs: bridge: add multicast doc

Add multicast part for bridge document.

Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Hangbin Liu 2023-12-01 16:19:47 +08:00 • committed by Paolo Abeni
commit 75ceac88ef