Merge branch 'lan9303-Fix-STP-and-flooding-issues'

Egil Hjelmeland says:

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net: dsa: lan9303: Fix STP and flooding issues

This patch set finishes the STP support, and fixes flooding issues.

Patch 1 fixes a flooding issue in the previous patch set.
Patch 2 finishes STP support by adding a ALR entry.
Patch 3 prevent duplicate flooding in HW and SW bridge.
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Signed-off-by: David S. Miller <davem@davemloft.net>