configure: add missing lpc dependency to mlp and truehd encoders

configure

@@ -2458,6 +2458,7 @@ mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
 mjpegb_decoder_select="mjpeg_decoder"
 mlp_decoder_select="mlp_parser"
+mlp_encoder_select="lpc"
 motionpixels_decoder_select="bswapdsp"
 mp1_decoder_select="mpegaudio"
 mp1float_decoder_select="mpegaudio"
@@ -2536,6 +2537,7 @@ thp_decoder_select="mjpeg_decoder"
 tiff_decoder_suggest="zlib lzma"
 tiff_encoder_suggest="zlib"
 truehd_decoder_select="mlp_parser"
+truehd_encoder_select="lpc"
 truemotion2_decoder_select="bswapdsp"
 truespeech_decoder_select="bswapdsp"
 tscc_decoder_select="zlib"