[U-Boot] LL TEMAC v9 refactored

[Stephan Linz]

Back to the discussion from the last three months I have refactored the
LL TEMAC driver again. The version v9 is ready to next review and
testing (I hope the last one). I myself have tested it successfully on
an ML605 (TEMAC hard core) and on a SP3ADSP1800 (TEMAC soft core).
Thanks to Marek, Wolfgang, Andy, Mike and Michal to review v4..8.
Special thanks to Ricardo. He has tested the driver v6 on a Xilinx
Virtex5 FX (PPC440) platform.

To use the driver on Microblaze, you will need all additional platform
patches by Michal Simek and me. All related patches are bundled on
patchwork:
  - http://patchwork.ozlabs.org/bundle/rexut/net-ll_temac/

@Michal: Please merge the patches into the custodian git tree for final
testing.

@Ricardo: Please could you test again the new v9 patch on your PPC440
platform.


-- 
Best regards,
Stephan Linz
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