[PATCH] pico-imx6: Remove unneeded CONFIG_DM_MDIO

> 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 > CONF

[PATCH] pico-imx6: Remove unneeded CONFIG_DM_MDIO

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. Sig