Merge branch 'fix/ble_funcs_reset_default_enabled_v6.1' into 'release/v6.1'

fix(bt): Add default BLE controller funcs reset enable (6.1)

See merge request espressif/esp-idf!49139

components/bt/controller/esp32c3/Kconfig.in

@@ -2,6 +2,15 @@ config BT_CTRL_MODE_EFF
     int
     default 1
 
+config BT_CTRL_CHECK_CONFIG_EFF
+    int
+    default 1
+    help
+        Marker that controller Kconfig is active (always set in sdkconfig).
+        Must not be unset in normal IDF builds. Controller-only integrations
+        that do not export this symbol rely on esp_bt.h to apply compile-time
+        defaults for missing BLE feature CONFIG_* names.
+
 config BT_CTRL_BLE_MAX_ACT
     int "BLE Max Instances"
     default 6

components/bt/controller/esp32c3/bt.c

@@ -1867,6 +1867,11 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
 
     ESP_LOGI(BT_LOG_TAG, "BT controller compile version [%s]", btdm_controller_get_compile_version());
 
+#ifndef CONFIG_BT_CTRL_CHECK_CONFIG_EFF
+    ESP_LOGW(BT_LOG_TAG, "CONFIG_BT_CTRL_CHECK_CONFIG_EFF is not defined; "
+             "using compile-time default BLE controller feature options");
+#endif
+
 #if (CONFIG_BT_CTRL_RUN_IN_FLASH_ONLY)
     ESP_LOGI(BT_LOG_TAG,"Put all controller code in flash");
 #endif