Bluetooth: controller: Add guards for feature_rsp_send
Bluetooth: controller: Add guards for feature_rsp_send

Add compilation guards for the feature_rsp_send function to avoid
compilation errors for some configurations.

Signed-off-by: Wolfgang Puffitsch <f148e6efbb74c70a1ee845a87fa7616913a99a4b@demant.com>

nashif/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr,Vudentz/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,nashif/zephyr,galak/zephyr,nashif/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,Vudentz/zephyr,Vudentz/zephyr,nashif/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr