hlsenc: Add a proper dependency on the mpegts muxer

The hls muxer itself doesn't have any direct (object file level)
dependencies on mpegtsenc.o, and including that object file
directly doesn't ensure that it is registered so that the muxer
actually is accessible.
Signed-off-by: Martin Storsjö <martin@martin.st>

configure

@@ -1809,6 +1809,7 @@ dirac_demuxer_select="dirac_parser"
 dxa_demuxer_select="riffdec"
 eac3_demuxer_select="ac3_parser"
 flac_demuxer_select="flac_parser"
+hls_muxer_select="mpegts_muxer"
 ipod_muxer_select="mov_muxer"
 ismv_muxer_select="mov_muxer"
 matroska_audio_muxer_select="matroska_muxer"

libavformat/Makefile

@@ -140,7 +140,7 @@ OBJS-$(CONFIG_H263_MUXER)                += rawenc.o
 OBJS-$(CONFIG_H264_DEMUXER)              += h264dec.o rawdec.o
 OBJS-$(CONFIG_H264_MUXER)                += rawenc.o
 OBJS-$(CONFIG_HLS_DEMUXER)               += hls.o
-OBJS-$(CONFIG_HLS_MUXER)                 += hlsenc.o mpegtsenc.o
+OBJS-$(CONFIG_HLS_MUXER)                 += hlsenc.o
 OBJS-$(CONFIG_IDCIN_DEMUXER)             += idcin.o
 OBJS-$(CONFIG_IFF_DEMUXER)               += iff.o
 OBJS-$(CONFIG_ILBC_DEMUXER)              += ilbc.o