Fix analogWidth for ESP32S2 in esp32-hal-adc.c

[caternuson]

Summary

Potential fix for #5691 and #5658.

Impact

Sets a different default value for analogWidth in esp32-hal-adc.c for ESP32S2 based boards. This fixes issue with performing analogRead on that platform.

Test sketch run on an Adafruit FunHouse which has an analog light sensor attached to A3:

void setup() {
  Serial.begin(9600);
}

void loop() {
  Serial.println(analogRead(A3));
  delay(100);
}

[CLAassistant]

All committers have signed the CLA.

[ladyada]

cc @felmue @me-no-dev @atanisoft @touchgadget

[atanisoft]

As noted in #5691 (comment) this will break ESP32-C3 ADC support.

[atanisoft]

This should be listed first and have an #else with the existing 12bit analog value. With the proposed change this will fail to compile on the ESP32-C3.

[caternuson]

@atanisoft What changes are needed? Can update the PR.

[me-no-dev]

thanks @caternuson

[VojtechBartoska]

close #5691