Version bump to N8I11B

Change-Id: I1096d970e086e0d2b01d9b45b7fefbc95ed77e43
diff --git a/core/build_id.mk b/core/build_id.mk
index b478d0a..3ccb7c9 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=N8I11
+export BUILD_ID=N8I11B