[PATCH 3/3] mmc: fsl_esdhc_imx: correct the actual card clock

[sbabic at denx.de]

> From: Haibo Chen <haibo.chen at nxp.com>
> The original code logic can not show the correct card clock, and also
> has one risk when the div is 0. Because there is div -=1 before.
> So move the operation before div -=1, and also involve ddr_pre_div
> to get the correct value.
> Signed-off-by: Haibo Chen <haibo.chen at nxp.com>
> Reviewed-by: Marek Vasut <marex at denx.de>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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