[PATCH net 1/3] net: phy: realtek: add eee advertisement disable options

There two kind of PHYs supporting eee, the one advertising eee by
default (like realtek) and the one not advertising it (like micrel).

I don't know too much about EEE. So maybe a dumb question. Does the
MAC need to be involved? Or is it just the PHY?

If the MAC needs to be involved, the PHY should not be advertising EEE
unless the MAC asks for it by calling phy_init_eee(). If this is true,
maybe we need to change the realtek driver, and others in that class.

      Andrew