external/boringssl: Sync to 3a3552247ecb0bfb260a36d9da7a3bce7fdc3f8a.

This includes the following changes:

https://boringssl.googlesource.com/boringssl/+log/e60b080dda138e1dd02d99fb34641ac22e46c85d..3a3552247ecb0bfb260a36d9da7a3bce7fdc3f8a

Also changes Android.bp to compile with execute-only memory again as
this should no longer be necessary with the mprotect changes in
https://boringssl.googlesource.com/boringssl/+/09a9ec036030ac84896f5143548d05f3951d1817

Bug: 134580074
Test: atest CtsLibcoreTestCases CtsLibcoreOkHttpTestCases
Change-Id: I0ec54998afd2e0b40ec930716397e20aa3c21bf2
64 files changed