gn2bp: Restrict visibility am: 136f5106af

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2489357

Change-Id: I83052095db91e537579b1f8fa334a6f151993446
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>