This patch updates the sungem driver. I reworked all of the PM stuff, making it
less prone to races, probably simpler to read as well, and I no longer shut the
PHY down when the interface is down so that things like laptop-net no longer
die (the gain in power consumption was minimal, not worth the pain). I also
implemented basic WOL support.

There is still something I'm not totally happy with in the locking
(explained in the comment at the beginning), basically too much locking and a
couple of places with delays in locks. I will try to improve these later on.

It also adds a fix for a MAC reset issue when the receiver gets stuck.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>