GRJ90C - a test build

Change-Id: Ieabc475f7e45db1d79a56036fdb377c52bd8f1ac
diff --git a/core/build_id.mk b/core/build_id.mk
index 212ed4e..49fda22 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=GRJ90B
+export BUILD_ID=GRJ90C