iNavFlight
foxeerv2 - enable 5V pads
The Foxeer F722 v2 has a pin (PC6) that turns on 5V supply to the 5V pads, via a FET. This patch makes that pin high so that the regulator gets connected to the pads.
The way I coded it, it could also be turned off via PINIO, but it defaults to on. There may be a way of coding it that doesn't use PINIO and just has the pin high all the time.
The solution is confirmed on the board https://www.foxeer.com/foxeer-mini-f722-v3-pro-fpv-flight-controller-20-20mm-build-in-pit-pass-g-426
For an additional consideration: In general, the idea of using a TSSOP-5 FET switch to control 5V peripheral power rail is quite debatable: this would work for a low-current GPS receiver; everything will be fine, but a couple of servos could trip overcurrent protection/blow out the tiny TSSOP IC. It's a limitation of the particular flight controller, other controllers may have different implementations.
@sensei-hacker The code fails to build on some targets. Check the https://github.com/iNavFlight/inav/runs/7718720977?check_suite_focus=true
