fixup for non QCOM targets

*potential memory leaks in MediaPlayerService
*fix ifdef placement in AudioTrack
*duplicate entry in MPEG4Extractor
*(int)mChannelCount == mReqChannelCount being checked twice in AudioFlinger
*pLatencyMs not getting assigned in AudioFlinger
*CAMERA_MSG_FOCUS_MOVE was lost in CameraService

Change-Id: I349a25078148d25f43bf5666fe04b84017b7daa7