Stop using audio device types as bit mask in policy.h

Bug: 135621476
Test: atest AudioHostTest, AudioPlaybackCaptureTest
Test: atest AudioServiceHostTest, audiopolicy_tests
Test: listen to music, make phone call with BT device
Test: test play music via Android Auto emulator
Change-Id: I154555579b0ebb8b020d00e9c05c8b9f79a08db4
1 file changed