samples: net: wifi: add mikroe wifi bt click
samples: net: wifi: add mikroe wifi bt click

as supported wifi interface for this sample.

Signed-off-by: Felipe Neves <c89ff9a29811b51140c7e118d20773632e83af30@linaro.org>

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