Add ADC channels to esp variants, plug code back in to make sure other archs work

variants/station-g1/variant.h

@@ -32,7 +32,8 @@
        // Info:https://uniteng.com/wiki/doku.php?id=meshtastic:station#rf_design_-_lora_station_edition_g1
 #endif
 
-#define BATTERY_PIN 35           // A battery voltage measurement pin, voltage divider connected here to measure battery voltage
+#define BATTERY_PIN 35 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage
+#define ADC_CHANNEL ADC1_GPIO35_CHANNEL
 #define BATTERY_SENSE_SAMPLES 30 // Set the number of samples, It has an effect of increasing sensitivity.
 #define ADC_MULTIPLIER 6.45
 #define BAT_FULLVOLT 12600
@@ -41,4 +42,4 @@
 #define BAT_NOBATVOLT 6690
 
 // different screen
-#define USE_SH1106
+#define USE_SH1106