Format *.bzl, *.bazel files using buildifier

Change-Id: Ib757ffb21707ecfb3572189c0161752731e474be
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/83667
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Auto-Submit: Lily Chen <chlily@google.com>

util/util.bzl

diff --git a/util/util.bzl b/util/util.bzl
index b0d7988..35c14a2 100644
--- a/util/util.bzl
+++ b/util/util.bzl
@@ -134,7 +134,7 @@
             deps = deps,
             testonly = testonly,
             alwayslink = alwayslink,
-            **linkstatic_kwargs(linkstatic),
+            **linkstatic_kwargs(linkstatic)
         )
 
         # Build the remainder as a C-only target.