Squashed 'external/devlib/' changes from 5425f4aff..f71b6a7d9

f71b6a7d9 collector/ftrace: Use top-level buffer instance
f02a0a38b utils/asyn: Fix cancellation of async tasks in map_concurrently()

git-subtree-dir: external/devlib
git-subtree-split: f71b6a7d96fda77112d1a29c01fcb1230e7eb56c