Exclude input devices when finding sinks from audio policy.

AUDIO_DEVICE_IN_LOOPBACK device was included as a sink for
output device, causing audio to output from both HDMI ARC
and TV speaker.

Bug: 26175894
Change-Id: I2922a8c5a47e3e480a5a2501fda5ab856e959ff4
(cherry picked from commit c289c4eb366f24714d5c85b55c04f0e4cb9b0df4)
1 file changed