Version bump to PD1A.180720.008

Change-Id: I41f9350581d98f2e46da48c80d3f647965e9bd9d
diff --git a/core/build_id.mk b/core/build_id.mk
index 7e4d8bd..bca6d77 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.180720.007
+export BUILD_ID=PD1A.180720.008