[U-Boot] disk: part: align buffer so it can be used with DMA enabled drivers

[Tom Rini]

On Wed, Aug 23, 2017 at 09:46:17AM -0700, Stefan Agner wrote:

> From: Stefan Agner <stefan.agner at toradex.com>
> 
> When using ISO partitions with a DMA enabled block device driver
> reading the ISO partition leads to unaligned DMA operations:
>   CACHE: Misaligned operation at range [bffb7da8, bffb85a8]
> 
> Align the buffer to make sure we pass a buffer which works for
> DMA operations.
> 
> Signed-off-by: Stefan Agner <stefan.agner at toradex.com>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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