regulator: da9121: extend support to variants, add features

This series extends the DA9121 driver to add support for related products:

DA9130, 10A, Dual-Phase (Automotive Grade)
DA9122, 5A + 5A
DA9131, 5A + 5A (Automotive Grade)
DA9220, 3A + 3A
DA9132, 3A + 3A (Automotive Grade)
DA9217, 6A, Dual-Phase

It also extends support to cover DT configured GPIO enable, current limit setting, and interrupt handling for all devices.

The datasheets are currently available here:

https://www.dialog-semiconductor.com/sites/default/files/da9122_datasheet_2v1.pdf
https://www.dialog-semiconductor.com/sites/default/files/da9220_datasheet_2v1.pdf
https://www.dialog-semiconductor.com/sites/default/files/da9217_datasheet_2v1.pdf
https://www.dialog-semiconductor.com/sites/default/files/da9130-a_datasheet_1v0.pdf
https://www.dialog-semiconductor.com/sites/default/files/da9131-a_datasheet_1v0.pdf
https://www.dialog-semiconductor.com/sites/default/files/da9132-a_datasheet_1v0.pdf

V4:

- Request IRQ directly and free in release function to avoid masking race

V3:

- Restored missing DT bindings patch

V2:

- Remove Vincent Whitchurch as DT maintainer, as requested
- Use configuration to select register map
- Split regmap and description patch
- Defer device ID check to negate, not gatekeep
- Removed superfluous compatible check
- Tidied banner comment
- Switched to using of_parse_cb()
- Simplified buck checks accordingly
- Simplified current/mode register/mask use
- Simplified interrupt handling
- Synchronise workqueue at driver exit

Adam Ward (10):
regulator: Update DA9121 dt-bindings
regulator: da9121: Add header file
regulator: da9121: Add device variants
regulator: da9121: Add device variant regmaps
regulator: da9121: Add device variant descriptors
regulator: da9121: Add support for device variants via devicetree
regulator: da9121: Update registration to support multiple buck
variants
regulator: da9121: add current support
regulator: da9121: add mode support
regulator: da9121: add interrupt support

 .../devicetree/bindings/regulator/dlg,da9121.yaml  |  164 +++-
 MAINTAINERS                                        |    2 +
 drivers/regulator/Kconfig                          |   14 +-
 drivers/regulator/da9121-regulator.c               | 1033 +++++++++++++++++++-
 drivers/regulator/da9121-regulator.h               |  291 ++++++
 .../dt-bindings/regulator/dlg,da9121-regulator.h   |   22 +
 include/linux/regulator/da9121.h                   |   36 +
 7 files changed, 1513 insertions(+), 49 deletions(-)
 create mode 100644 drivers/regulator/da9121-regulator.h
 create mode 100644 include/dt-bindings/regulator/dlg,da9121-regulator.h
 create mode 100644 include/linux/regulator/da9121.h

1.9.1