iio:adc:ltc2371: add support for ltc2361/ltc2363

[Darius Berghe]

Changelog v1->v2:
- document power supply in yaml
- reorder enums in alphabetical order
- add missing include
- drop the of_match_ptr protection

Darius Berghe (3):
  ltc2471: add of_match_table for existing devices
  ltc2471: ltc2461/ltc2463 compatible strings
  ltc2471 driver yaml

 .../bindings/iio/adc/adi,ltc2471.yaml         | 49 +++++++++++++++++++
 drivers/iio/adc/ltc2471.c                     | 25 ++++++++--
 2 files changed, 70 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ltc2471.yaml

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2.27.0