dts/connect: Use own fragments to modify existing pinmuxes [REVPI-2285]
Created by: iluminat23
If we redefine muxes which are already defined in the devicetree we might get errors when loading the overlay at runtime. Moving each pinmux which is redefined to its own fragment.
See https://github.com/RevolutionPi/linux/pull/98 for a different solution for this issue.