[U-Boot] fastboot: allow retrieving fastboot variables from env

[Tom Rini]

On Thu, Mar 17, 2016 at 05:21:23PM +0100, Boris BREZILLON wrote:

> From: Rob Herring <rob.herring at linaro.org>
> 
> Some boards need to expose device specific variable through fastboot
> (to adpat the flashing script depending on hardware revision for
> example).
> 
> Provide a way to expose custom fastboot variables. Note that all
> variables meant to be exposed through fastboot should be be prefixed
> with 'fastboot.', the variable should not exceed 32 bytes (including
> the prefix and the trailing '\0') and the variable content should
> fit in the response buffer (60 bytes excluding the 'OKAY' prefix and
> the trailing '\0').
> 
> Signed-off-by: Rob Herring <rob.herring at linaro.org>
> [Boris Brezillon: add a commit message]
> Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
> 
> Signed-off-by: Boris Brezillon <boris.brezillon at free-electrons.com>
> Acked-by: Steve Rae <srae at broadcom.com>

Applied to u-boot/master, thanks!

-- 
Tom
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