Merge branch 'bugfix/c2_chip_info_gpio_range' into 'master'

hw-support: update C2 chip info to reflect that esp8684 has embedded flash

Closes IDFGH-8735 and IDFGH-8734

See merge request espressif/esp-idf!21064

components/esp_hw_support/port/esp32c2/chip_info.c

@@ -14,5 +14,5 @@ void esp_chip_info(esp_chip_info_t *out_info)
     out_info->model = CHIP_ESP32C2;
     out_info->revision = efuse_hal_chip_revision();
     out_info->cores = 1;
-    out_info->features = CHIP_FEATURE_WIFI_BGN | CHIP_FEATURE_BLE;
+    out_info->features = CHIP_FEATURE_WIFI_BGN | CHIP_FEATURE_BLE | CHIP_FEATURE_EMB_FLASH;
 }

examples/common_components/env_caps/esp32c2/Kconfig.env_caps

@@ -4,7 +4,8 @@ config ENV_GPIO_RANGE_MIN
 
 config ENV_GPIO_RANGE_MAX
     int
-    default 20
+    default 18
+    # GPIOs 19/20 are always used by UART in examples
 
 config ENV_GPIO_IN_RANGE_MAX
     int