Make change and version bump to QQ1A.190519.001

Change-Id: I3cf752d28395dd8f1733340435772c3861b3f9d7
diff --git a/core/build_id.mk b/core/build_id.mk
index 2329288..173583b 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=QT
+BUILD_ID=QQ1A.190519.001