Revert "t6: fix random mac address and remove unused config"

This reverts commit 47b299058aa3c08ca488eedb15d3af824cc2b356.
Prima 3.2.3.172

Change-Id: Ic71e6418776d16036e31d03c70afa429aef7d21f
Set performance for faster boot

Change-Id: I9674cf93f54e4076f2c596dee2c890f097a5b204