add mips64el build script

Of course, this does not reproduce the issue on the Skia tree...

Change-Id: I19e6119d2d09aaece0301ec2b4c44f9c4b8cc950
Reviewed-on: https://skia-review.googlesource.com/c/162003
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
4 files changed