Version bump to BP4A.250827.002.W1 [core/build_id.mk]

Change-Id: Ibdfab21db35b0a0fbe3cb00e5a732948cbc2726e
diff --git a/core/build_id.mk b/core/build_id.mk
index 5b123d0..5c6245d 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=BP4A.250827.002
+BUILD_ID=BP4A.250827.002.W1