HMJ21B

Change-Id: Id0100e2f49cd61935598922a68bb1e438cf906a7
diff --git a/core/build_id.mk b/core/build_id.mk
index fcd1a54..60b66d4 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=HMJ21
+export BUILD_ID=HMJ21B