Rename of the u-boot-atmel custodian tree

[Anatolij Gustschin]

On Mon, 20 Sep 2021 06:46:01 +0000
Eugen.Hristev at microchip.com Eugen.Hristev at microchip.com wrote:
...
> Former u-boot-atmel tree is now u-boot-at91, available at :
> 
> https://source.denx.de/u-boot/custodians/u-boot-at91
> 
> Tom, do you know how can we update the U-boot denx wiki ?
> https://www.denx.de/wiki/U-Boot/Custodians

I've updated the git repo description in wiki.

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Anatolij