[U-Boot] [U-Boot,v6,06/10] cpu: Add get_vendor callback

[Alexander Graf]

> The CPU udevice already has a few callbacks to retreive information
> about the currently running CPUs. This patch adds a new get_vendor()
> call that returns the vendor of the main CPUs.
> 
> Signed-off-by: Alexander Graf <agraf at suse.de>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>

Thanks, applied to