Pull i2c updates from Wolfram Sang:

 - core supports now bus regulators controlling power for SCL/SDA

 - quite some DT binding conversions to YAML

 - added a seperate DT binding for the optional SMBus Alert feature

 - documentation with examples how to deal with I2C sysfs files

 - some bigger rework for the i801 driver

 - and a few usual driver updates

* 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (42 commits)
  i2c: ali1535: mention that the device should not be disabled
  i2c: mpc: Restore reread of I2C status register
  i2c: core-smbus: Expose PEC calculate function for generic use
  Documentation: i2c: Add doc for I2C sysfs
  i2c: core: Disable client irq on reboot/shutdown
  dt-bindings: i2c: update bindings for MT8195 SoC
  i2c: imx: Fix some checkpatch warnings
  i2c: davinci: Simplify with dev_err_probe()
  i2c: cadence: Simplify with dev_err_probe()
  i2c: xiic: Simplify with dev_err_probe()
  i2c: cadence: Clear HOLD bit before xfer_size register rolls over
  dt-bindings: i2c: ce4100: Replace "ti,pcf8575" by "nxp,pcf8575"
  i2c: i801: Improve i801_setup_hstcfg
  i2c: i801: Use driver name constant instead of function dev_driver_string
  i2c: i801: Simplify initialization of i2c_board_info in i801_probe_optional_slaves
  i2c: i801: Improve status polling
  i2c: cht-wc: Replace of_node by NULL
  i2c: riic: Add RZ/G2L support
  dt-bindings: i2c: renesas,riic: Document RZ/G2L I2C controller
  dt-bindings: i2c: renesas,iic: Convert to json-schema
  ...