Version bump to RP1A.191031.002 [core/build_id.mk]

Change-Id: Ic2636fb972795d414e787ca34f9c9c0520a01610
diff --git a/core/build_id.mk b/core/build_id.mk
index 3ff4c06..37011ad 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=RP1A.191031.001
+BUILD_ID=RP1A.191031.002