[En-Nut-Discussion] rework of cs8900 driver for avr

[Ole Reinhardt]

Hi all,

I'm reworking the cs8900 ethernet driver for avr to be complient with
the arm variant. So why:

- only have one device defintion, both drivers use dev/cs8900.h
- make code easyer to maintain
- hopefully fix my problems I have on avr platform. There seem to be 
  major problems with initialisation on my plattform. 

I would like to check in the result back to cvs, but this will break
existing applications in case of device name usage. This should be very
easy to fix.

What's your opinion?

Other question: There is still a conditional compiling in the old avr
driver defined by 

NUT_CS8900_OLD

Does anybody still need to have this code?

Any comments are wellcome.

best regards,

Ole Reinhardt

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