[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/encodeframe.c b/av1/encoder/encodeframe.c
index e3c6036..49497fd 100644
--- a/av1/encoder/encodeframe.c
+++ b/av1/encoder/encodeframe.c
@@ -325,6 +325,10 @@
   set_offsets_without_segment_id(cpi, tile, x, mi_row, mi_col, bsize);
 
   mbmi = &xd->mi[0]->mbmi;
+#if CONFIG_CFL
+  xd->cfl->mi_row = mi_row;
+  xd->cfl->mi_col = mi_col;
+#endif
 
   // Setup segment ID.
   if (seg->enabled) {