Version bump to PPR1.180517.006

Change-Id: I5d3282bf0df974886c62113946918b2a1993da5d
diff --git a/core/build_id.mk b/core/build_id.mk
index 2cfd0c5..c0777db 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=PPR1.180517.005
+export BUILD_ID=PPR1.180517.006