Caleb Connolly 024c95392d
input: button_kbd: gracefully handle buttons that fail probe ...
If a button device fails to probe, it will still be added to the uclass
device list, and therefore will still be iterated over in
button_read_keys() resulting in a UAF on the buttons private data.
Resolve this by unbinding button devices that aren't active after
probing, and print a warning so it's clear that the button is broken.
Fixes: e877996289caleb.connolly@linaro.org >
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024c95392d