[U-Boot] [PATCH] blk: Remove various places that do flush cache after read

[Joe Hershberger]

On Mon, Aug 21, 2017 at 10:46 PM, Bin Meng <bmeng.cn at gmail.com> wrote:
> All these places seem to inherit the codes from the MMC driver where
> a FIXME was put in the comment. However the correct operation after
> read should be cache invalidate, not flush.
>
> The underlying drivers should be responsible for the cache operation.
> Remove these codes completely.
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>

Reviewed-by: Joe Hershberger <joe.hershberger at ni.com>