o) Recognize the Lanner MR-730.

o) Recognize the Lanner MR-730.
o) Fix enumeration of PHY addresses on the MR-955.
o) Parse link state for the MR-730 using the Broadcom PHY support in the SDK.
   It's not clear that this is entirely-correct, but it seems to work.  Since
   this board uses a BCM5482S, this may mean that we work correctly for copper
   but not SFI, which is untested.