Merge branch 'net-phy-Add-general-dummy-stubs-for-MMD-register-access'

Kevin Hao says:

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net: phy: Add general dummy stubs for MMD register access

v2:
As suggested by Andrew:
  - Add general dummy stubs
  - Also use that for the micrel phy

This patch series fix the Ethernet broken on the mpc8315erdb board introduced
by commit b6b5e8a6 ("gianfar: Disable EEE autoneg by default").
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Signed-off-by: David S. Miller <davem@davemloft.net>