dnxhdenc depends on mpegvideo_enc (usage of ff_convert_matrix)

Originally committed as revision 10694 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -56,7 +56,7 @@ OBJS-$(CONFIG_CSCD_DECODER)            += cscd.o
 OBJS-$(CONFIG_CYUV_DECODER)            += cyuv.o
 OBJS-$(CONFIG_DCA_DECODER)             += dca.o
 OBJS-$(CONFIG_DNXHD_DECODER)           += dnxhddec.o dnxhddata.o
-OBJS-$(CONFIG_DNXHD_ENCODER)           += dnxhdenc.o dnxhddata.o
+OBJS-$(CONFIG_DNXHD_ENCODER)           += dnxhdenc.o dnxhddata.o mpegvideo_enc.o
 OBJS-$(CONFIG_DSICINVIDEO_DECODER)     += dsicinav.o
 OBJS-$(CONFIG_DSICINAUDIO_DECODER)     += dsicinav.o
 OBJS-$(CONFIG_DVBSUB_DECODER)          += dvbsubdec.o