hammerhead: bt-wbs mixer path changes
hammerhead: bt-wbs mixer path changes

Add paths for bt-wb-sco devices & routes

Change-Id: I91e3c1b350e8dce5f0737cf3b5e6358976fd3fa0
Bug: 13763881

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead