Version bump to QQ1A.190919.002 [core/build_id.mk]

Change-Id: Ib18c113ffce91a656752211297803fe3dfdc7b15
diff --git a/core/build_id.mk b/core/build_id.mk
index 3a4fd5a..7ca2345 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=QQ1A.190919.001
+BUILD_ID=QQ1A.190919.002