Version bump to PD1A.180618.001

Change-Id: Ie92e56ffb9fb27eb6ddd9379a9a6f2522a8eb81c
diff --git a/core/build_id.mk b/core/build_id.mk
index 62a7ac8..93bf784 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=PD1A.180617.001
+export BUILD_ID=PD1A.180618.001