Version bump to PPR1.180419.002

Change-Id: I4688da2cf195e97eedeca793ed862a80e5d61a3b
diff --git a/core/build_id.mk b/core/build_id.mk
index 8bb0458..4ced9b7 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=PPR1.180419.001
+export BUILD_ID=PPR1.180419.002