cavs: Add a dependency on h264chroma

This fixes standalone building of this decoder.
Signed-off-by: Martin Storsjö <martin@martin.st>

configure

@@ -1512,7 +1512,7 @@ atrac1_decoder_select="mdct sinewin"
 atrac3_decoder_select="mdct"
 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
 binkaudio_rdft_decoder_select="mdct rdft sinewin"
-cavs_decoder_select="golomb mpegvideo"
+cavs_decoder_select="golomb h264chroma mpegvideo"
 comfortnoise_encoder_select="lpc"
 cook_decoder_select="mdct sinewin"
 cscd_decoder_select="lzo"