PREUPLOAD.cfg: enable bpfmt

Bug: N/A
Test: N/A
Change-Id: I4a168950b56a6ead0658ded94caa8eb9f15df1d9
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 0140275..6740bb5 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -2,6 +2,7 @@
 ignore_merged_commits = true
 
 [Builtin Hooks]
+bpfmt = true
 clang_format = true
 
 [Hook Scripts]