Merge branch 'mxl-gpy-MDI-X'

Raju Lakkaraju says:

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net: phy: mxl-gpy: Add MDI-X

This patch series add the MDI-X feature to GPY211 PHYs and
Also Change return type to gpy_update_interface() function
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Signed-off-by: David S. Miller <davem@davemloft.net>