board: ip_k66f: Update list of used (supported) features
board: ip_k66f: Update list of used (supported) features

The following features: 'i2c' and 'netif:eth' are now used in the
ip_k66f board. Let's mark them in the "supported:" section of the
ip_k66f.yaml.

The latter one is necessary as a prerequisite to run some tests (like
e.g. netif:eth is necessary to run network related ones).

Signed-off-by: Lukasz Majewski <7acbb0643e3da1a0f6f894ebd720fb3807e67dff@denx.de>

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