Version bump to OPR1.170623.012

Change-Id: I2ffee87123c6f6fa43b83e1f60d424235a8c51fb
diff --git a/core/build_id.mk b/core/build_id.mk
index aa135f8..81da281 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=OPR1.170623.011
+export BUILD_ID=OPR1.170623.012