[U-Boot] LL TEMAC V8 refactored

[Stephan Linz]

Back to the discussion from the last three months I have refactored the
LL TEMAC driver again. The version V8 is ready to next review and
testing. I myself have tested it successfully on an ML605 (TEMAC hard
core) and on a SP3ADSP1800 (TEMAC soft core). Thanks to Marek, Wolfgang,
Andy and Michal to review V4..7. Special thanks to Ricardo. He has
tested the driver 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 test the new V8 patch on your PPC440 platform again and
post the patches for xilinx/ppc440-generic if you want.


-- 
Best regards,
Stephan Linz
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