suites/board_igep0050: Add test for audio JACK.
suites/board_igep0050: Add test for audio JACK.

Test audio JACK via loopback, the sound sent to audio-out should return in
audio-in.

Signed-off-by: Enric Balletbo i Serra <84b0e7bf25d36728076eb55422a35b75ccc0ab37@iseebcn.com>

eballetbo/igep_qa,eballetbo/igep_qa