Definition of device_role_t.

device_role_t describes the role of audio devices for a strategy for
output devices (sinks) or audio source for input devices (sources).

Test: make
Bug: 160352965
Change-Id: Ie55158f5f0c49666290cbf8d3aebc290e7363dbc
Merged-In: Ie55158f5f0c49666290cbf8d3aebc290e7363dbc
1 file changed