external/boringssl: Sync to 3989c99706bf30054798ff82f1cb010e50e385f5. am: 92a0f790a5

Original change: https://android-review.googlesource.com/c/platform/external/boringssl/+/1455436

Change-Id: Icd0cb1de2f725cef83a029656c48795f78d24979