[U-Boot] dfu: mmc: call fs functions instead of run_command

[Stephen Warren]

On 1/30/19 7:42 PM, Tom Rini wrote:
> On Fri, Jan 25, 2019 at 07:58:01PM +0100, Simon Goldschmidt wrote:
> 
>> This unbreaks dfu mmc_file_op which is currently broken since using the
>> load cmd on a buffer from heap is not allowed - added with
>> commit aa3c609e2be5 ("fs: prevent overwriting reserved memory")
>>
>> Fixes: commit aa3c609e2be5 ("fs: prevent overwriting reserved memory")
>> Reported-by: Stephen Warren <swarren at wwwdotorg.org>
>> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
>> Tested-by: Stephen Warren <swarren at nvidia.com>
>> Acked-by: Lukasz Majewski <lukma at denx.de>
> 
> Applied to u-boot/master, thanks!

Great, the testing is green again:-) Thanks. (Now we just need -video, 
-dm, and -net to rebase on u-boot/master so they go green again too).