Merge branch 'sfc-siena-next'

Martin Habets says:

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sfc: Remove Siena bits from sfc.ko

Last year we split off Siena into it's own driver under directory siena.
This patch series removes the now unused Falcon and Siena code from sfc.ko.
No functional changes are intended.
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Signed-off-by: David S. Miller <davem@davemloft.net>