This patch fixes machine detection on nodejs where the build
pipeline may not use gn and as a result certain macros
will not get set.

More details can be found in this comment:
https://github.com/nodejs/node-v8/issues/223#issuecomment-1180505313

Change-Id: I0cbfc736b28bc130acbdc2cf2e27bbf687be463c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3757944Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81667}