Fail assumption in AudioRecordSharedAudioTest if device lacks Mic

If the device does not have a microphone, the AudioRecordSharedAudioTest
should not run, rather than not adopting the shell permission identity

Test: atest AudioRecordSharedAudioTest on a microphone-less device
Fixes: 196246404
Change-Id: I19d54853648c281a0e1fbf3a8ac73c258c43ae9d
1 file changed