lavc: fix shared build after dnxhd merge.

Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/libavcodec.v

@@ -27,5 +27,7 @@ LIBAVCODEC_$MAJOR {
                 ff_jpeg_fdct*;
                 #XBMC's configure checks for ff_vdpau_vc1_decode_picture()
                 ff_vdpau_vc1_decode_picture;
+                ff_dnxhd_get_cid_table;
+                ff_dnxhd_cid_table;
         local:  *;
 };