Version bump to RD1B.200723.001 [core/build_id.mk]

Change-Id: I94567947a3f8bf7dbcbc31814a7415e077fe639d
diff --git a/core/build_id.mk b/core/build_id.mk
index 11f4a80..82fedd0 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.
 
-BUILD_ID=RVC
+BUILD_ID=RD1B.200723.001