[CFL] CfL Initialization Simplification

The CfL context is now stored inside MACROBLOCKD instead of
MACROBLOCKD only storing a pointer to the CfL context.
The intent is to avoid race conditions as MACROBLOCKD is stored
inside ThreadData. This change also simplifies CfL Initialization.

Change-Id: I991503716b21fc9aca60caddb2008b8bff397e6d
diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index f0c87c5..4aebe8f 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -1120,16 +1120,16 @@
   if (is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x,
                           xd->plane[1].subsampling_y)) {
 #if CONFIG_CFL
-    xd->cfl->is_chroma_reference = 1;
+    xd->cfl.is_chroma_reference = 1;
 #endif  // CONFIG_CFL
     mbmi->uv_mode = read_intra_mode_uv(ec_ctx, r, mbmi->mode);
 
 #if CONFIG_CFL
     if (mbmi->uv_mode == UV_CFL_PRED) {
       mbmi->cfl_alpha_idx = read_cfl_alphas(ec_ctx, r, &mbmi->cfl_alpha_signs);
-      xd->cfl->store_y = 1;
+      xd->cfl.store_y = 1;
     } else {
-      xd->cfl->store_y = 0;
+      xd->cfl.store_y = 0;
     }
 #endif  // CONFIG_CFL
 
@@ -1137,8 +1137,8 @@
     // Avoid decoding angle_info if there is is no chroma prediction
     mbmi->uv_mode = UV_DC_PRED;
 #if CONFIG_CFL
-    xd->cfl->is_chroma_reference = 0;
-    xd->cfl->store_y = 1;
+    xd->cfl.is_chroma_reference = 0;
+    xd->cfl.store_y = 1;
 #endif
   }
 
@@ -1489,9 +1489,9 @@
     if (mbmi->uv_mode == UV_CFL_PRED) {
       mbmi->cfl_alpha_idx =
           read_cfl_alphas(xd->tile_ctx, r, &mbmi->cfl_alpha_signs);
-      xd->cfl->store_y = 1;
+      xd->cfl.store_y = 1;
     } else {
-      xd->cfl->store_y = 0;
+      xd->cfl.store_y = 0;
     }
 #endif  // CONFIG_CFL
 
@@ -1499,8 +1499,8 @@
     // Avoid decoding angle_info if there is is no chroma prediction
     mbmi->uv_mode = UV_DC_PRED;
 #if CONFIG_CFL
-    xd->cfl->is_chroma_reference = 0;
-    xd->cfl->store_y = 1;
+    xd->cfl.is_chroma_reference = 0;
+    xd->cfl.store_y = 1;
 #endif
   }