Version bump to OPD3.170816.012

Change-Id: Ia1eada196e68f23190945a85289b2b3d06e03baa
diff --git a/core/build_id.mk b/core/build_id.mk
index 392996b..53dab2a 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=OPD3.170816.011
+export BUILD_ID=OPD3.170816.012