GRK71 again

Change-Id: Ib5f68df8ad7022dd0760f38e72c8fc3840be92b4
diff --git a/core/build_id.mk b/core/build_id.mk
index 2f587cb..401caae 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -20,3 +20,4 @@
 # capitalized by convention.
 
 export BUILD_ID=GRK71
+