try 2 threads on n7/np

Change-Id: Ibbfd36d0c1e89fdbbf8e7ba36f1bf5c236ef5e0d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/202107
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2 files changed