Add i2c to supported peripheral to enable i2c testing. Signed-off-by: Karol Lasończyk <karol.lasonczyk@nordicsemi.no>
Test defines a lopback between i2c driver master and nrfx TWIS slave to verify their functional correctness. Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>