[HACK] fix ringtone temporarily until proper solution is found (paulb-nl)

Change-Id: I185179d3d3c3952347663d7e7ccf47051487dbe1
msm7x30: add INCALL_MUSIC stream type to getStrategy()

Getting unknonw stream type flood in the log. This should fix it.

Change-Id: I57c75f8f8edb117fbddf72bd2784298a438e6dd0