GRH18B

Change-Id: I92fa1ad11ef1b938780512ef198b13361f5bb0c1
diff --git a/core/build_id.mk b/core/build_id.mk
index f69f832..41347b2 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=GRH18
+export BUILD_ID=GRH18B