Version bump to RP1A.200331.002 [core/build_id.mk]

Change-Id: Ib2bea62f3b336d5b47f76e25ac475afb2f7c248b
diff --git a/core/build_id.mk b/core/build_id.mk
index aae5e9b..976913a 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.200331.001
+BUILD_ID=RP1A.200331.002