Merge branch 'r8169-add-EEE-support-for-RTL8168f'

Heiner Kallweit says:

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r8169: add EEE support for RTL8168f

This series adds EEE support for RTL8168f. Again first patch adds the
support, and second patch enables EEE per default.
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Signed-off-by: David S. Miller <davem@davemloft.net>