Version bump to RP1A.200720.012 [core/build_id.mk]

Change-Id: I78a66788b7629adc50e2bfb9c695a04d35afda26
diff --git a/core/build_id.mk b/core/build_id.mk
index 69e5d7d..9e99ad1 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.200720.011
+BUILD_ID=RP1A.200720.012