[CFL] Clean cfl.h include

cfl.h is no longer included in the onyxc_int.h. cfl.h is now included in
each file that uses cfl functions.

Change-Id: I80a2e57159217b0ee20b2562fc9711d929472b8c
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index ed6626e..31cff4e 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -25,6 +25,9 @@
 #endif  // CONFIG_BITSTREAM_DEBUG
 
 #include "av1/common/cdef.h"
+#if CONFIG_CFL
+#include "av1/common/cfl.h"
+#endif
 #include "av1/common/entropy.h"
 #include "av1/common/entropymode.h"
 #include "av1/common/entropymv.h"