Vary number of threads in the End-to-End benchmark

PiperOrigin-RevId: 278412578
diff --git a/BUILD.bazel b/BUILD.bazel
index 77f94f9..b80d9db 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -860,7 +860,10 @@
     srcs = ["bench/utils.cc"],
     hdrs = ["bench/utils.h"],
     copts = ["-Wno-unused-result"],
-    deps = ["@cpuinfo"],
+    deps = [
+        "@com_google_benchmark//:benchmark",
+        "@cpuinfo",
+    ],
 )
 
 ######################### Benchmarks for micro-kernels #########################