configure: Add idctdsp dependency to codecs that need it

Currently masked by faan.

Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

configure

@@ -2773,6 +2773,7 @@ ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
 acelp_kelvin_decoder_select="audiodsp"
 adpcm_g722_decoder_select="g722dsp"
 adpcm_g722_encoder_select="g722dsp"
+agm_decoder_select="idctdsp"
 aic_decoder_select="golomb idctdsp"
 alac_encoder_select="lpc"
 als_decoder_select="bswapdsp mpeg4audio"
@@ -2820,7 +2821,7 @@ dxv_decoder_select="lzf texturedsp"
 eac3_decoder_select="ac3_decoder"
 eac3_encoder_select="ac3_encoder"
 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
-eatgq_decoder_select="aandcttables"
+eatgq_decoder_select="aandcttables idctdsp"
 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
 exr_decoder_deps="zlib"
 exr_encoder_deps="zlib"
@@ -2859,7 +2860,7 @@ huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
 hymt_decoder_select="huffyuv_decoder"
 iac_decoder_select="imc_decoder"
 imc_decoder_select="bswapdsp fft mdct sinewin"
-imm4_decoder_select="bswapdsp"
+imm4_decoder_select="bswapdsp idctdsp"
 imm5_decoder_select="h264_decoder hevc_decoder"
 indeo3_decoder_select="hpeldsp"
 indeo4_decoder_select="ividsp"