Draft: external/devlib: Revert to upstream
TODO: wait until these PRs are merged then update the subtrees:
https://github.com/ARM-software/devlib/pull/689 https://github.com/ARM-software/workload-automation/pull/1276
TODO: wait until these PRs are merged then update the subtrees:
https://github.com/ARM-software/devlib/pull/689 https://github.com/ARM-software/workload-automation/pull/1276