Make change and version bump to QP1A.190502.001

Change-Id: I6289896ee90962ff9c39b0a98961831763f764a3
diff --git a/core/build_id.mk b/core/build_id.mk
index 2329288..d04b622 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=QP1A.190502.001