Add AMS AS3722 mfd, pincontrol, regulator and RTC driver.

This series add the driver support for AMS AS3722 PMIC. The driver includes
MFD, pincontrol and GPIO, regulator and RTC.

Changes from V1:
- Remove compatible string from DT for subnode.
- Add macro in regmap.h for definign range.
- Nit cleanups in driver and use module_i2c_driver/module_platform_driver.
- Use linear_range and added regulator_map_* on regulators.
- Move OC configuration to regulator_current limit setting.
- Get rid of clk32k out configuration from RTC. Will add clock driver.

Changes from V2:
- Drop the already applied patches on V2 series
	regmap: add helper macro to set min/max range of register
	regulator: as3722: add regulator driver for AMS AS3722
- Move the GPIo driver to pincontrol driver to expose the pin configuration
  through pincontrol.
- rewrite the DT binding of the mfd.

Laxman Dewangan (3):
  mfd: add support for AMS AS3722 PMIC
  pincntrl: add support for AMS AS3722 pin control driver
  drivers/rtc/rtc-as3722: add RTC driver

 Documentation/devicetree/bindings/mfd/as3722.txt   |   52 ++
 .../devicetree/bindings/pinctrl/pinctrl-as3722.txt |   59 ++
 drivers/mfd/Kconfig                                |   12 +
 drivers/mfd/Makefile                               |    1 +
 drivers/mfd/as3722.c                               |  448 ++++++++++++++
 drivers/pinctrl/Kconfig                            |   11 +
 drivers/pinctrl/Makefile                           |    1 +
 drivers/pinctrl/pinctrl-as3722.c                   |  625 ++++++++++++++++++++
 drivers/rtc/Kconfig                                |   10 +
 drivers/rtc/Makefile                               |    1 +
 drivers/rtc/rtc-as3722.c                           |  296 +++++++++
 include/linux/mfd/as3722.h                         |  423 +++++++++++++
 12 files changed, 1939 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mfd/as3722.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-as3722.txt
 create mode 100644 drivers/mfd/as3722.c
 create mode 100644 drivers/pinctrl/pinctrl-as3722.c
 create mode 100644 drivers/rtc/rtc-as3722.c
 create mode 100644 include/linux/mfd/as3722.h

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