Merge branch 'stmmac-eee'

Giuseppe Cavallaro says:

====================
stmmac EEE fixes

This is a subset of patches to provide some fixes for the EEE support inside the
driver.
Patches have been tested on boards EEE capable plugged on switch w/ w/o EEE
support.
====================

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