Add OpenCL test job that runs hello-opencl.

Add NEO driver to opencl_linux asset.

Bug: skia:8081
Change-Id: Ic36c670f3cabd73119845e94fcb2f54525e83443
Reviewed-on: https://skia-review.googlesource.com/138264
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
15 files changed