GitLab

makesdk.go now expects aarch64 builds, but local-sdk.py wasn't building
it. Updated it to build both i86-64 and aarch64

Change-Id: I6598010205bd6dbe1da522dcd0455a0df267a73d
Reviewed-on: https://chromium-review.googlesource.com/703997Reviewed-by: Wez <wez@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506922}