gn2bp: Restrict visibility am: 136f5106af

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

Change-Id: I8fb0ef15abf6f52e9bb159d624766c0cf5c18fcb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>