Enable use of FFMPEG codecs on DOMX

It is currently on omx if the media_codecs support it.  But not present on any legacy device

This is basically a manual dif moto omap4 commit
https://github.com/CyanogenMod/android_device_motorola_omap4-common/commit/56fa473b5703ccdfbd2558de4be40f263f7ad7dc

Reocmmend by James Dean

Change-Id: I5e5bb68cb5e9b18354485df0396e267ea5e3fb49