Merge branch 'mlxsw-SPAN-egress-mirroring-buffer-size'

Ido Schimmel says:

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mlxsw: Adjust SPAN egress mirroring buffer size handling for Spectrum-2

Jiri says:

For Spectrum-2 the computation of SPAN egress mirroring buffer uses a
different formula. On top of MTU it needs also current port speed. Fix
the computation and also trigger the buffer size set according to PUDE
event, which happens when port speed changes.
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Signed-off-by: David S. Miller <davem@davemloft.net>