Fix build with global motion disabled

Change-Id: I1c00925f83c6a858b0e799ddd90f241570a40575

av1/common/av1_rtcd_defs.pl

diff --git a/av1/common/av1_rtcd_defs.pl b/av1/common/av1_rtcd_defs.pl
index 954c072..1498adc 100755
--- a/av1/common/av1_rtcd_defs.pl
+++ b/av1/common/av1_rtcd_defs.pl
@@ -617,7 +617,7 @@
   }
 }
 
-if (aom_config("CONFIG_WARPED_MOTION") eq "yes" &&
+if (aom_config("CONFIG_GLOBAL_MOTION") eq "yes" &&
     aom_config("CONFIG_AV1_ENCODER") eq "yes") {
   add_proto qw/double compute_cross_correlation/, "unsigned char *im1, int stride1, int x1, int y1, unsigned char *im2, int stride2, int x2, int y2";
   specialize qw/compute_cross_correlation sse4_1/;