[PATCH V2 11/12] scripts: config_whitelist: drop CONFIG_MMCROOT

[sbabic at denx.de]

> From: Peng Fan <peng.fan at nxp.com>
> Drop CONFIG_MMCROOT, no users now.
> Reviewed-by: Fabio Estevam <festevam at denx.de>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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