Version bump to OPR4.170808.001

Change-Id: I3d7a1d9ae2ada8492b080c4fbab1c5476eb8470f
diff --git a/core/build_id.mk b/core/build_id.mk
index ce68c59..fb543ab 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=OPR4.170623.001
+export BUILD_ID=OPR4.170808.001