esp32/boards/ESP32_GENERIC_C6: Add support for esp32c6.

Signed-off-by: Andrew Leech <andrew@alelec.net>

ports/esp32/boards/ESP32_GENERIC_C6/board.json

@@ -0,0 +1,19 @@
+{
+    "deploy": [
+        "../deploy_c6.md"
+    ],
+    "docs": "",
+    "features": [
+        "BLE",
+        "WiFi"
+    ],
+    "id": "esp32c6",
+    "images": [
+        "esp32c6_devkitmini.jpg"
+    ],
+    "mcu": "esp32c6",
+    "product": "ESP32-C6",
+    "thumbnail": "",
+    "url": "https://www.espressif.com/en/products/modules",
+    "vendor": "Espressif"
+}

ports/esp32/boards/ESP32_GENERIC_C6/mpconfigboard.cmake

@@ -0,0 +1,9 @@
+set(IDF_TARGET esp32c6)
+
+set(SDKCONFIG_DEFAULTS
+    boards/sdkconfig.base
+    boards/sdkconfig.ble
+    boards/ESP32_GENERIC_C6/sdkconfig.board
+)
+
+#set(CONFIG_BT_NIMBLE_LEGACY_VHCI_ENABLE "y")

ports/esp32/boards/ESP32_GENERIC_C6/mpconfigboard.h

@@ -0,0 +1,12 @@
+// This configuration is for a generic ESP32C6 board with 4MiB (or more) of flash.
+
+#define MICROPY_HW_BOARD_NAME               "ESP32C6 module"
+#define MICROPY_HW_MCU_NAME                 "ESP32C6"
+
+#define MICROPY_HW_ENABLE_SDCARD            (0)
+#define MICROPY_PY_MACHINE_DAC              (0)
+#define MICROPY_PY_MACHINE_I2S              (0)
+
+// #define MICROPY_PY_BLUETOOTH (1)
+// #define MICROPY_BLUETOOTH_NIMBLE (1)
+// #define MICROPY_BLUETOOTH_NIMBLE_BINDINGS_ONLY (1)

ports/esp32/boards/ESP32_GENERIC_C6/sdkconfig.board

@@ -0,0 +1,7 @@
+CONFIG_ESP32C6_BROWNOUT_DET=y
+CONFIG_ESP32C6_BROWNOUT_DET_LVL_SEL_7=
+CONFIG_ESP32C6_BROWNOUT_DET_LVL_SEL_4=y
+CONFIG_ESP32C6_BROWNOUT_DET_LVL=4
+CONFIG_ESP_CONSOLE_UART_DEFAULT=
+CONFIG_ESP_CONSOLE_UART_BAUDRATE=115200
+CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG=y