Use full pixel MV search in TPL

Let TPL do full pixel MV search at speed 5.
Borg test result at speed 5:
         avg_psnr:  ovr_psnr:  ssim:  speedup:
lowres2    0.102     0.096     0.450   1.2
midres2    0.114     0.173     0.212   2.2
hdres2     0.254     0.275     0.306   2.5

STATS_CHANGED

Change-Id: I53e85b62a697441ade095d6165003bfe0180cbb0
diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 0386c79..be123f1 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -1004,6 +1004,7 @@
 
     sf->tpl_sf.prune_starting_mv = 3;
     sf->tpl_sf.use_y_only_rate_distortion = 1;
+    sf->tpl_sf.subpel_force_stop = FULL_PEL;
 
     sf->winner_mode_sf.dc_blk_pred_level = 1;
   }
@@ -1031,7 +1032,6 @@
     sf->mv_sf.use_bsize_dependent_search_method = 1;
 
     sf->tpl_sf.disable_gop_length_decision = 1;
-    sf->tpl_sf.subpel_force_stop = FULL_PEL;
     sf->tpl_sf.disable_filtered_key_tpl = 1;
 
     sf->tx_sf.tx_type_search.winner_mode_tx_type_pruning = 2;