Integrate linux-imx-kuk/enable_mv
Commit: seco-ne/kernel/linux-imx-kuk@91df1c8d
dts:d18: Disable fec/ethphy1 because of address collision
The boot strapping in U-Boot isn't integrated correctly yet. Because of this, we have a collision between the ethphys. Since we don't use the second phy right now, we disable it.