If the output is set to 0 then the FMU had this channel disabled/no function mapped
to it. In that case we do not want to suddenly start outputing failsafe or disarmed
signals.
Add ARK_FMU_V6X to RCS netman
Remove arkv6x rc single wire
Fix arkv6x mtd
arkv6x bootloader init all pins to prevent power cycling peripherals on boot
arkv6x don't power cycle sd card on boot
arkv6x add UART4 Telem 4
Matthias Grob