tree 13593d0a2835f684cb7000207ab13742a7dd2579
parent e2abade4245ac06b57195a8cbab0fa0157d68463
author Adam Langley <alangley@gmail.com> 1593464306 -0700
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1593720381 +0000

Maybe build for AArch64 Windows.

Microsoft lists[1] this define to indicate AArch64, support for which is
requested on https://github.com/grpc/grpc/issues/23310.

More might well be needed, especially if the assembly code is to work,
but maybe this'll work for gRPC.

[1] https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=vs-2019

Change-Id: Id66d1c8ab7ab161f73c993dd4901e2252198bda8
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/41945
Reviewed-by: Adam Langley <alangley@gmail.com>
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>