Bluetooth: ISO: Make it possible to setup unidirectional CIS

The current iso commands in the shell only supports setting up
a bidirectional stream or unidirectional for central role.
Adding rx/tx/rxtx option to iso listen command to allow for
peripheral side configuration of an iso connection.

Signed-off-by: Casper Bonde <casper_bonde@bose.com>
2 files changed