avformat/mxfenc: fix static building

MXF muxer requires rangecoder otherwise static linking fails.
Signed-off-by: Michael Riedl <michael.riedl@nativewaves.com>

configure

@@ -3520,7 +3520,7 @@ mp4_muxer_select="mov_muxer"
 mpegts_demuxer_select="iso_media"
 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
 mpegtsraw_demuxer_select="mpegts_demuxer"
-mxf_muxer_select="pcm_rechunk_bsf"
+mxf_muxer_select="pcm_rechunk_bsf rangecoder"
 mxf_d10_muxer_select="mxf_muxer"
 mxf_opatom_muxer_select="mxf_muxer"
 nut_muxer_select="riffenc"