APM: route all clients to bit-perfect output when it is active.

When bit-perfect output is active, all clients should be routed to
bit-perfect output so that there won't be issues for the HAL to configure
the sink.

Bug: 285345410
Test: atest audiopolicy_tests
Change-Id: I374171611f02e60f999ac81a0eed4db0c6079313
3 files changed