configure: add MLP parser as dependency to MLP and TrueHD demuxers

It's needed to assemble complete frames.
Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -3295,6 +3295,7 @@ matroska_audio_muxer_select="matroska_muxer"
 matroska_demuxer_select="iso_media riffdec"
 matroska_demuxer_suggest="bzlib lzo zlib"
 matroska_muxer_select="iso_media riffenc"
+mlp_demuxer_select="mlp_parser"
 mmf_muxer_select="riffenc"
 mov_demuxer_select="iso_media riffdec"
 mov_demuxer_suggest="zlib"
@@ -3329,6 +3330,7 @@ spdif_muxer_select="adts_header"
 spx_muxer_select="ogg_muxer"
 swf_demuxer_suggest="zlib"
 tak_demuxer_select="tak_parser"
+truehd_demuxer_select="mlp_parser"
 tg2_muxer_select="mov_muxer"
 tgp_muxer_select="mov_muxer"
 vobsub_demuxer_select="mpegps_demuxer"