Make change and version bump to PQ2A.181120.001

Change-Id: I0a868c1b6b8be14d4a4fe52ab0a93f17aae5d37e
diff --git a/core/build_id.mk b/core/build_id.mk
index 25c1bf4..a79a76c 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.
 
-export BUILD_ID=PQ2A.181115.002
+export BUILD_ID=PQ2A.181120.001