Version bump to OPR1.170623.026

Change-Id: Id043bf753d98e5732230fc4bdd4b0485547e5e5d
diff --git a/core/build_id.mk b/core/build_id.mk
index a7d0e96..d060d32 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=OPR1.170623.025
+export BUILD_ID=OPR1.170623.026