Additionally limit upscaled references to <= 720 for profile!=0.

The previous limit was <=1080p, which was sufficient to keep RAM
usage below 3GB for the 8 bit path, but turns out to be insufficient
for the 10 bit path.

Change-Id: I7a19261928a4e1a71f5f297125651113a2465d3d

av1/encoder/speed_features.c

diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 69076a8..a44a733 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -457,6 +457,9 @@
   if (AOMMIN(cm->width, cm->height) > 1080) {
     sf->use_upsampled_references = 0;
   }
+  if ((AOMMIN(cm->width, cm->height) > 720) && (oxcf->profile != PROFILE_0)) {
+    sf->use_upsampled_references = 0;
+  }
 
   if (oxcf->mode == REALTIME) {
     set_rt_speed_feature_framesize_dependent(cpi, sf, oxcf->speed);