Should esp-wifi take ownership of ADC2?

[Frostie314159]

Motivations

On the ESP32, you can't use the ADC2 peripheral, during Wi-Fi operations, which the current API, this is still possible.

Solution

Make esp-wifi take ownership of ADC2 when starting the stack.

Alternatives

@MabezDev suggested detecting this, and panicking, if the user tries to use ADC2, while Wi-Fi is active, since this is only a requirement on the ESP32.

Additional context