[U-Boot] [PATCH] Disable FLASH_AMLV256U support for TOP860 target

[Reinhard Meyer <reinhard.meyer@emk-elektronik.de>]

Dear Wolfgang,
> Dear Reinhard,
>
> In message <544F6AD8.2070605@emk-elektronik.de> you wrote:
>> top860 can be removed (We already had that discussion a while ago.)
>>
>> top5200 is still active in several older projects, but there was no need
>> to make changes to u-boot or to integrate new features of u-boot.
>> Therefore I am not testing whether any changes to u-boot break the
>> function of top5200.
>>
>> top9000 is dead. Thanks atmel :(
>> However it might be left in u-boot as an example.
> Hm... if two of the boards are dead, and you are not even testing the
> third, can we not just remove all of them?  That would also allow to
> get rid of board/emk/common:
Agreed.
>
> - am79c874.c is completely bogus anyway
How so?
> - flash.c should have been replaced by the CFI driver years ago
I think there was/is an issue with the fact that top5200 uses GPIO for 
the uppermost (A16+) address lines AND that FLASH is connected 8 Bit wide.
Maybe CFI code does support such by now, at that time it did not.
> - vpd.c is causing efforts when I2C / EEPROM code gets changed
ideally, the API should not change that often ;)
>
> What do you think?
Since its quite unlikely I will make any changes to those boards in the 
future, they can be removed.

Best Regards,
Reinhard