bit_depth_template: don't depend on dsputil.h.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/bit_depth_template.c

@@ -16,8 +16,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "dsputil.h"
 #include "rnd_avg.h"
+#include "libavutil/intreadwrite.h"
 
 #ifndef BIT_DEPTH
 #define BIT_DEPTH 8