removing dependency on bfin_sram.h, which is not used right now

Originally committed as revision 9388 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/bfin/dsputil_bfin.c

@@ -22,7 +22,6 @@
  */
 
 #include <unistd.h>
-#include <bits/bfin_sram.h>
 #include "avcodec.h"
 #include "dsputil.h"
 #include "dsputil_bfin.h"