Merge branch 'phy-dp83867-enable-robust-auto-mdix'

Grygorii Strashko says:

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net: phy: dp83867: enable robust auto-mdix

Patch 1 - improves link detection when dp83867 PHY is configured in manual mode
by enabling CFG3[9] Robust Auto-MDIX option.

Patch 2 - is minor optimization.
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Signed-off-by: David S. Miller <davem@davemloft.net>