Fixes the following link error:
  nutdec.c:(.text+0x2d47): undefined reference to `ff_codec_movvideo_tags'
  isom.c:(.text+0x332): undefined reference to `avpriv_mpeg4audio_get_config'
  isom.c:(.text+0x39e): undefined reference to `avpriv_mpa_freq_tab'