ESP32-C6 use controller_hci_uart fail

[jingwenliou]

<t>board type:ESP32-C6-DevKitM-1 board <br/>
esp-idf:V5.2<br/>
use idf-esp example to configure the Bluetooth Low Energy Controller's HCI (ESP32-C6-DevKitM-1 board ) to communicate over UART .<br/>
The current example has the following problems:<br/>
controller_hci_uart_esp32: <br/>
1.The build and flash was successful, but it seems that this only supports btdm scenarios, and the device we are using （ESP32-C6）supports BLE only。<br/>
2.Unable to open device hci uart to convey HCI messages after successful burning<br/>
<br/>
[0;33mW (356) BLE_INIT: invalid controller mode[0m<br/>
[0;31mE (366) CONTROLLER_UART_HCI: Bluetooth Controller initialize failed: ESP_FAIL[0m<br/>
<br/>
controller_hci_uart_esp32c3_and_esp32s3build fail,espc6 has no hal/uhci_ll.h file<br/>
<br/>
To sum up, we want to find an example for device (ESP32-C6) that can be successfully compiled to control the uart as hci io,What should we do?</t>