Merge branch 'phy-mxl-gpy-version-fix-and-improvements'

Michael Walle says:

====================
net: phy: mxl-gpy: version fix and improvements

Fix the version reporting which was introduced earlier. The version will
not change during runtime, so cache it and save a PHY read on every auto
negotiation. Also print the version in a human readable form.
====================

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