libmix: MPEG4 parser refinement

BZ: 131068

This patch refined content:
1. replace DEB with xTRACE
2. remove legacy code about workload
3. tiny optimization based on the code logic

Change-Id: Iecfe68f00ff876a29c7b0307f6925dc6bdea8fe3
Signed-off-by: Gu, Wangyi <wangyi.gu@intel.com>
Reviewed-on: http://android.intel.com:8080/138144
Reviewed-by: Shi, PingX <pingx.shi@intel.com>
Tested-by: Shi, PingX <pingx.shi@intel.com>
Reviewed-by: cactus <cactus@intel.com>
Tested-by: cactus <cactus@intel.com>
9 files changed