Version bump to RP1A.190902.002 [core/build_id.mk]

Change-Id: I9b2c09ac154a18e1928354209545a4f24d5a30ff
diff --git a/core/build_id.mk b/core/build_id.mk
index c5ac6ef..b5418db 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.190902.001
+BUILD_ID=RP1A.190902.002