Turn on CONFIG_COLLECT_INTER_MODE_RD_STATS

As reported, this feature provides 4~5% speedup with
mild performance drop on speed 0
lowres 0.02%
midres 0.05

Change-Id: Ia786ff7f1621b63aa3a1be19a57ad62c31246534
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index bd94b24..df90223 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -91,7 +91,7 @@
 set(DECODE_WIDTH_LIMIT 0 CACHE NUMBER "Set limit for decode width.")
 
 # AV1 experiment flags.
-set(CONFIG_COLLECT_INTER_MODE_RD_STATS 0 CACHE NUMBER "AV1 experiment flag.")
+set(CONFIG_COLLECT_INTER_MODE_RD_STATS 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_COLLECT_RD_STATS 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_DIST_8X8 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_ENTROPY_STATS 0 CACHE NUMBER "AV1 experiment flag.")