unit/test-avrcp: Add /TP/PTH/BV-02-C test
unit/test-avrcp: Add /TP/PTH/BV-02-C test

Verify that when a button to send a PASS THROUGH command is held
down the CT continues to issue button presses every 2 seconds until the
button is released.

pkarasev3/bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,mapfau/bluez,pstglia/external-bluetooth-bluez,mapfau/bluez,pkarasev3/bluez,ComputeCycles/bluez,ComputeCycles/bluez,ComputeCycles/bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,mapfau/bluez,mapfau/bluez,pkarasev3/bluez,pkarasev3/bluez,silent-snowman/bluez