GRK39

Change-Id: Ia4b60a25edae6e8525710ffd11e30308eb22d0db
diff --git a/core/build_id.mk b/core/build_id.mk
index 49fda22..1f20212 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -19,4 +19,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-export BUILD_ID=GRJ90C
+export BUILD_ID=GRK39