Add missing functions and signatures for older OMX video libs compat

Nvidia OMX libs need these to work
That fixes hardware OMX video codecs + Camera on TF101

AudioTrack: Do not inline getSessionId either

Should help for other nvomx versions that requires it.

Change-Id: I9f9afa844edf3e6d1fd25524f2cc155b974245ec
Re-add missing ICS_AUDIO_BLOBS

Change-Id: I5d72eaa9ff0bf94b69924b299f3108c216778773