media: Enable ffmpeg decoders

Change-Id: I47c9b1aaf38cf78c47ad5512bd9df5cb63eb7b87
Replace libcyanogen-dsp in audio effects config.

Change-Id: I1b843110dce773c06f463ed7ebfc3b5d00c460e3
Merge branch 'cm-12.0' of https://github.com/CyanogenMod/android_device_lge_mako into c5