alsa_sound: Clean up makefiles

Change-Id: I3ef63259b4220d73d427ef6152c6d5ec7acf9f4c
alsa_sound: Don't use USB devices for calls

 * Causing audio failure on JF. Disable until it's sorted.

Change-Id: I492e1882450f26aa6c6c062915df83f03dfa193b