Update ESP32AnalogDevice.cpp
Update ESP32AnalogDevice.cpp

ADC_WIDTH_BIT_DEFAULT for at least ESP32-S2 compatibility. 
ADC_WIDTH_BIT_12 for ESP32
ADC_WIDTH_BIT_13 for ESP32-S2
instead of IFDEF, we can use  ADC_WIDTH_BIT_DEFAULT
davetcc/BasicIoAbstraction