Merge branch 'r8169-add-support-for-RTL8125B'

Heiner Kallweit says:

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r8169: add support for RTL8125B

This series adds support for RTL8125B rev.b.
Tested with a Delock 89564 PCIe card.
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Signed-off-by: David S. Miller <davem@davemloft.net>