gst/mxf/: Coding style fixes.

gst/mxf/: Coding style fixes.

Original commit message from CVS:
* gst/mxf/mxfdemux.c:
(gst_mxf_demux_handle_header_metadata_resolve_references):
* gst/mxf/mxfdv-dif.c: (mxf_dv_dif_create_caps):
* gst/mxf/mxfjpeg2000.c: (mxf_jpeg2000_create_caps):
Coding style fixes.
* gst/mxf/mxfmpeg.c: (mxf_mpeg_audio_handle_essence_element),
(mxf_mpeg_es_create_caps), (mxf_mpeg_create_caps):
Add support for MPEG, AC3, DTS audio.