i9500: correct USB tether regex

Change-Id: I09af898adfeb45df662e060f066981119873248f
i9500: audio: Add matching end call call_clock_sync call

Change-Id: Ib1ae803f36af919fc03400924ed817e9eb74d24f
i9500: Reset sound config to default

Change-Id: I38182f3e081c4071ea84b8088a0eeb1853db173c