[U-Boot] AT91 clock and timer cleanups

[Wolfgang Denk]

Dear Reinhard Meyer,

In message <4CAA0BB1.7010608 at emk-elektronik.de> you wrote:
>
> I agree here, and will change that whenever I encounter it in files
> I touch (most is copied from the atmel EK config file).

Thanks.

> The general question, however was, if that approach is OK with you.

Well, I still prefer to have this added to a single, central location
instead to a large number of board config files.

However, if you have to touch all these board config files anyway (and
accept the need to re-test on all affected boards) then I don't insist
on any specific implementation.

Please don't forget to document the new CONFOG_ variable (in the
README).

Best regards,

Wolfgang Denk

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