Version bump to RD1A.200521.002 [core/build_id.mk]

Change-Id: I283d80858ce5acf8abe08c50b2cd05b5fe6a87d4
diff --git a/core/build_id.mk b/core/build_id.mk
index e6940b0..7d34413 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=RD1A.200521.001
+BUILD_ID=RD1A.200521.002