Version bump to QP1A.190711.020.C1 [core/build_id.mk]

Change-Id: Ide6cb80eb0796016cc29923d2ee38c3d9caa05c7
diff --git a/core/build_id.mk b/core/build_id.mk
index 53a3460..99f80e7 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=QP1A.190711.020
+BUILD_ID=QP1A.190711.020.C1