msm8974: Offload MPEG2 audio

Change-Id: Ib524421c3aa7b2067644bd6ff86802bcb50fea65
msm8974: Use FFMPEG for WMA/WMV

 * Not supported in DSP

Change-Id: I938f27236809676411723786d18c047320ee12d4
Merge branch 'cm-11.0' into kk_mkt