Satisfy 4.3 TARGET_CPU_VARIANT requirement

Change-Id: I8d7023f2de6911ef820e4f940f772e2b2023cab1
Revert "Build audio components properly"

This reverts commit 882686de6cdf82da2f17161e84f44429422985f9.
Revert "Build alsa HAL components from source"

This reverts commit 82078132762f4c5a601ce92486a3e679c97a01ca.