feather-m0: add support for saul_bat_voltage #21022
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Contribution description
When trying to get #21018 to work for the
feather-m0
, the ADC line only returned-1
, so I removed this from #21018.Testing procedure
Flash
example/saul
to one (or ideally all) of the supported boards and use the CLI to read from theBAT
registry entry.Issues/PRs references
Based on #21018