[CFL] Adjust Pixel Buffer for Chroma Sub8x8

Adjust row and col offset for sub8x8 blocks to allow the CfL prediction
to use all available reconstructed luma pixels.

Results on Subset 1 (Compared to b03c2f44 with CfL)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.1355 | -0.8517 | -0.4481 |  -0.0579 | -0.0237 | -0.0203 |    -0.2765

Change-Id: Ia91f0a078f0ff4f28bb2d272b096f579e0d04dac
diff --git a/av1/encoder/encodemb.c b/av1/encoder/encodemb.c
index 6df156c..e0f4516 100644
--- a/av1/encoder/encodemb.c
+++ b/av1/encoder/encodemb.c
@@ -1420,7 +1420,9 @@
 #endif
 #if CONFIG_CFL
   if (plane == AOM_PLANE_Y && x->cfl_store_y) {
-    cfl_store(xd->cfl, dst, dst_stride, blk_row, blk_col, tx_size);
+    // TODO (ltrudeau) Store sub-8x8 inter blocks when bottom right block is
+    // intra predicted.
+    cfl_store(xd->cfl, dst, dst_stride, blk_row, blk_col, tx_size, plane_bsize);
   }
 #endif
 }