Version bump to PQ1A.181205.004

Change-Id: I6e488a54540131d13b54302649d3b12651611c50
diff --git a/core/build_id.mk b/core/build_id.mk
index daf972b..ba84b06 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=PQ1A.181205.003
+export BUILD_ID=PQ1A.181205.004