Squashed 'external/devlib/' changes from f30fb0b3f..4589b4698

4589b4698 target: Fix typo Changed target variable to self because it is not defined in the file.
56746fdb3 ssh: Fix tools detection
c347861db android: Ensure we use the detected fastboot
3f9ce8ba7 android: Fix tool detections

git-subtree-dir: external/devlib
git-subtree-split: 4589b4698ed4bac2af93a3bdbce6b4c1e4fca495