avcodec/h264idct_template: Don't include h264dec.h

It is only needed for scan8 which is in h264_parse.h.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/h264idct_template.c

@@ -27,7 +27,7 @@
 
 #include "bit_depth_template.c"
 #include "libavutil/common.h"
-#include "h264dec.h"
+#include "h264_parse.h"
 #include "h264idct.h"
 
 void FUNCC(ff_h264_idct_add)(uint8_t *_dst, int16_t *_block, int stride)