Add missing path to #include statement.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@13101 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/imgresample.c

@@ -25,8 +25,8 @@
  */
 
 #include "avcodec.h"
-#include "swscale.h"
 #include "dsputil.h"
+#include "libswscale/swscale.h"
 
 #ifdef HAVE_ALTIVEC
 #include "ppc/imgresample_altivec.h"