Version bump to PPR1.180517.002

Change-Id: I78ace5c95a250cc4e0576c620ab1e02f2605c262
diff --git a/core/build_id.mk b/core/build_id.mk
index 234faaa..815528c 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=PPR1.180517.001
+export BUILD_ID=PPR1.180517.002