Merge branch 'phy-broadcom-wirespeed-downshift-support'

Florian Fainelli says:

====================
net: phy: broadcom: Wirespeed/downshift support

This patch series adds support for the Broadcom Wirespeed, aka
downsfhit feature utilizing the recently added ethtool PHY tunables.

Tested with two Gigabit link partners with a 4-wire cable having only
2 pairs connected.

Last patch in the series is a fix that was required for testing, which
should make it to -stable, which I can submit separate against net if
you prefer David.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>