ESP32s3: Migrate variants to new structure (#7343)

variants/esp32s3/heltec_vision_master_e290/variant.h

@@ -0,0 +1,53 @@
+#define LED_PIN 45 // LED is not populated on earliest board variant
+#define BUTTON_PIN 0
+#define PIN_BUTTON2 21             // Second built-in button
+#define ALT_BUTTON_PIN PIN_BUTTON2 // Send the up event
+
+// I2C
+#define I2C_SDA SDA
+#define I2C_SCL SCL
+
+// Display (E-Ink)
+#define PIN_EINK_CS 3
+#define PIN_EINK_BUSY 6
+#define PIN_EINK_DC 4
+#define PIN_EINK_RES 5
+#define PIN_EINK_SCLK 2
+#define PIN_EINK_MOSI 1
+
+// SPI
+#define SPI_INTERFACES_COUNT 2
+#define PIN_SPI_MISO 11
+#define PIN_SPI_MOSI 10
+#define PIN_SPI_SCK 9
+
+// Power
+#define VEXT_ENABLE 18 // Powers the E-Ink display only
+#define VEXT_ON_VALUE HIGH
+#define ADC_CTRL 46
+#define ADC_CTRL_ENABLED HIGH
+#define BATTERY_PIN 7
+#define ADC_CHANNEL ADC1_GPIO7_CHANNEL
+#define ADC_MULTIPLIER 4.9 * 1.03
+#define ADC_ATTENUATION ADC_ATTEN_DB_2_5
+
+// LoRa
+#define USE_SX1262
+
+#define LORA_DIO0 RADIOLIB_NC // a No connect on the SX1262 module
+#define LORA_RESET 12
+#define LORA_DIO1 14 // SX1262 IRQ
+#define LORA_DIO2 13 // SX1262 BUSY
+
+#define LORA_SCK 9
+#define LORA_MISO 11
+#define LORA_MOSI 10
+#define LORA_CS 8
+
+#define SX126X_CS LORA_CS
+#define SX126X_DIO1 LORA_DIO1
+#define SX126X_BUSY LORA_DIO2
+#define SX126X_RESET LORA_RESET
+
+#define SX126X_DIO2_AS_RF_SWITCH
+#define SX126X_DIO3_TCXO_VOLTAGE 1.8