Use device set for getDevicesForStream

Implemented through getDevicesForAttributes.
This change avoids device bit-mask aliasing.

Use a TreeSet for device set instead of
HashSet to unify with native handling.

Test: boot and check audio
Test: atest audiopolicy_tests
Test: atest AudioHostTest
Test: atest AudioServiceHostTest
Test: atest AudioManagerTest
Bug: 184944421
Bug: 220928984
Change-Id: Id382172f44f604de659de0bff52c0a28603d1e79