Enable winner-mode based txfm size search for realtime mode

 SPD_SET | TESTSET | AVG_PSNR | OVR_PSNR |  SSIM   |  SPD
---------+---------+----------+----------+---------+-------
    5    |rtc_derf | -0.734%  | -0.768%  | +0.392% |+21.4%
    5    |   rtc   | -1.157%  | -1.119%  | +0.151% |+20.8%
---------+---------+----------+----------+---------+-------
    6    |rtc_derf | -1.063%  | -1.084%  | -0.018% |+17.5%
    6    |   rtc   | -1.557%  | -1.468%  | -0.611% |+20.0%
---------+---------+----------+----------+---------+-------
    7    |rtc_derf | +0.200%  | +0.331%  | +0.320% | +2.2%
    7    |   rtc   | +0.091%  | +0.129%  | +0.079% | +1.7%
---------+---------+----------+----------+---------+-------
    8    |rtc_derf | +0.025%  | +0.062%  | +0.054% | +0.1%
    8    |   rtc   | +0.034%  | +0.023%  | +0.059% | +0.0%
---------+---------+----------+----------+---------+-------
    9    |rtc_derf | -0.075%  | -0.035%  | -0.127% | +0.1%
    9    |   rtc   | -0.005%  | +0.008%  | -0.025% | +0.1%
---------+---------+----------+----------+---------+-------

STATS_CHANGED

Change-Id: I24cd02dd65848fbae906aecdc7a26c849357385a
diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 1fa1b03..c29d4bc 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -1366,6 +1366,8 @@
     sf->lpf_sf.cdef_pick_method = CDEF_FAST_SEARCH_LVL4;
     sf->lpf_sf.lpf_pick = LPF_PICK_FROM_Q;
 
+    sf->winner_mode_sf.enable_winner_mode_for_tx_size_srch = 1;
+
     sf->rt_sf.mode_search_skip_flags |= FLAG_SKIP_INTRA_DIRMISMATCH;
     sf->rt_sf.num_inter_modes_for_tx_search = 5;
     sf->rt_sf.skip_interp_filter_search = 1;