Add support for the ROHM BD79105 ADC
(and do some minor simplifications to the ad7476 driver while at it).

The first 2 patches were originally sent as an RFC:
https://lore.kernel.org/all/cover.1754041258.git.mazziesaccount@gmail.com/

Revision history:
  v3 => v4:
   - Add patch:
     8/11 "dt-bindings: iio: adc: ad7476: Drop redundant prop: true"
   - Drop redundant true -branches also from the bd79105 binding
   - Other patches unchanged.

  v2 => v3:
   - Drop 5/10 "Limit the scope of the chip_info"
   - Add 5/10 "use *_cansleep GPIO APIs"
   - Multiple fixes as suggested during v2 review. More accurate
     changelog included in individual patches

  v1 => v2:
   - Two new patches:
     5/10 "Limit the scope of the chip_info" and
     6/10 "Drop convstart chan_spec"
     Please, let me know if you think some of the changes should be
     squashed.
   - Multiple fixes as suggested during v1 review. More accurate
     changelog included in individual patches

  Simplification RFC => ROHM BD79105 support series v1:
   - Use spi_get_device_match_data()
   - Fix uV to mV conversion
   - Rewording of commit message
   - Added patches 3 to 8.

Matti Vaittinen (11):
  iio: adc: ad7476: Simplify chip type detection
  iio: adc: ad7476: Simplify scale handling
  iio: adc: ad7476: Use mV for internal reference
  iio: adc: ad7476: Use correct channel for bit info
  iio: adc: ad7476: use *_cansleep GPIO APIs
  iio: adc: ad7476: Drop convstart chan_spec
  iio: adc: ad7476: Conditionally call convstart
  dt-bindings: iio: adc: ad7476: Drop redundant prop: true
  dt-bindings: iio: adc: ad7476: Add ROHM bd79105
  iio: adc: ad7476: Support ROHM BD79105
  MAINTAINERS: A driver for simple 1-channel SPI ADCs

 .../bindings/iio/adc/adi,ad7476.yaml          | 100 +++-
 MAINTAINERS                                   |   5 +
 drivers/iio/adc/ad7476.c                      | 461 +++++++++---------
 3 files changed, 311 insertions(+), 255 deletions(-)


base-commit: 93ef68672bb353838cdf8314be8765c05768916b
-- 
2.50.1