a5: media_codecs: use ffmpeg codecs

Change-Id: I70ae2910d451d592c9933bd5cd9347c96c7c3e13
a5: Build the NFC HAL from source

Change-Id: I0223065b1899a1a4d77568926659822ccd8ad47d
a5: Update NFC config files

Change-Id: I3dddc5e8cf92a50f4e6cce2dc8a9f5cff2ddffb8