[PATCH] pico-imx6: Remove unneeded CONFIG_DM_MDIO

[sbabic at denx.de]

> As explained in the CONFIG_DM_MDIO text inside drivers/net/Kconfig:
>     
> "Useful in particular for systems that support
> DM_ETH and have a stand-alone MDIO hardware block shared by multiple
> Ethernet interfaces."
>     
> i.MX6 has a single FEC instance, so there is no need to select
> CONFIG_DM_MDIO.
> Signed-off-by: Fabio Estevam <festevam at gmail.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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