Add bpf_headers visibility for CtsNativeNetPlatformTestCases

The CtsNativeNetPlatformTestCases uses BpfUtils.h in bpf_headers.

Bug: 29761778
Bug: 202086915
Test: atest CtsNativeNetPlatformTestCases on signed user build
Change-Id: Ibbb10392a283b88328ae17d9aa54322f50878e76
diff --git a/staticlibs/native/bpf_headers/Android.bp b/staticlibs/native/bpf_headers/Android.bp
index 8426dce..af8ec73 100644
--- a/staticlibs/native/bpf_headers/Android.bp
+++ b/staticlibs/native/bpf_headers/Android.bp
@@ -37,6 +37,7 @@
     ],
     visibility: [
         "//bootable/libbootloader/vts",
+        "//cts/tests/tests/net/native",
         "//frameworks/base/services/core/jni",
         "//frameworks/native/libs/cputimeinstate",
         "//frameworks/native/services/gpuservice",