deblocking_across_tiles->loopfilter_across_tiles

This commit renames deblocking_across_tiles to loopfilter_across_tiles, 
to get ready for dering and clpf integration.

Change-Id: Id25b051da9b1e5cb92f35a9619662597462d9537
diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index 018f88a..d2cd5a9 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -3663,9 +3663,9 @@
   if (cm->log2_tile_rows != 0) aom_wb_write_bit(wb, cm->log2_tile_rows != 1);
 #endif  // CONFIG_EXT_TILE
 
-#if CONFIG_DEBLOCKING_ACROSS_TILES
+#if CONFIG_LOOPFILTERING_ACROSS_TILES
   aom_wb_write_bit(wb, cm->loop_filter_across_tiles_enabled);
-#endif  // CONFIG_DEBLOCKING_ACROSS_TILES
+#endif  // CONFIG_LOOPFILTERING_ACROSS_TILES
 }
 
 static int get_refresh_mask(AV1_COMP *cpi) {