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.
Dear all, On Thursday, 4th September 2025, we will test the new disaster recovery environment. A disaster recovery test will take place between 4:00 PM and 6:00 PM CEST. Please refrain from making any changes, as they will be lost. Once testing is complete, the production environment will be restored. Thank you for your understanding.
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.