gn2bp: Add boringssl change to gn2bp generator am: 1e68691ac2

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2497537

Change-Id: I07667e812be89e45391fb118f96dc9c1daca355e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>