Merge branch 'mlxsw-Several-updates'

Ido Schimmel says:

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mlxsw: Several updates

Patches #1-#3 contain misc updates for the mlxsw driver, one of which is
a fix following recent introduction of flow_rule infrastructure.

Patch #4 avoids double sourcing of lib.sh in forwarding selftests.
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Signed-off-by: David S. Miller <davem@davemloft.net>