Fix latm muxer Makefile dependencies.

Found, analysed and tested by trac user Jamal.

Fixes part of ticket #1428.

libavformat/Makefile

@@ -137,7 +137,7 @@ OBJS-$(CONFIG_JACOSUB_DEMUXER)           += jacosubdec.o
 OBJS-$(CONFIG_JACOSUB_MUXER)             += jacosubenc.o rawenc.o
 OBJS-$(CONFIG_JV_DEMUXER)                += jvdec.o
 OBJS-$(CONFIG_LATM_DEMUXER)              += rawdec.o
-OBJS-$(CONFIG_LATM_MUXER)                += latmenc.o
+OBJS-$(CONFIG_LATM_MUXER)                += latmenc.o rawenc.o
 OBJS-$(CONFIG_LMLM4_DEMUXER)             += lmlm4.o
 OBJS-$(CONFIG_LOAS_DEMUXER)              += loasdec.o
 OBJS-$(CONFIG_LXF_DEMUXER)               += lxfdec.o