Bump build id to 8901.4.A.0019.2

Change-Id: Ia94ccba810933124f6676635e7c637d1093f0949
diff --git a/core/build_id.mk b/core/build_id.mk
index 3deab51..518dd25 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-BUILD_ID=8901.4.A.0019.1
+BUILD_ID=8901.4.A.0019.2