Merge "i2c: add Phytium i2c driver for both server and desktop platform

#123"

Add Phytium i2c driver and its dt-bindings yaml documents.
This driver is for both server and desktop platform using.

Include follow 4 commits:
* 8940089 ACPI: APD: Add clock frequency for Phytium I2C controller
  c770de6 i2c: designware: add i2c support for Phytium SoCs
  71507aa i2c: phytium: Add i2c driver for Phytium I2C adapter
  9437fe7 dt-bindings: Add bindings for Phytium I2C/SMBus controller

Signed-off-by: Jiakun Shuai <[email protected]>
Signed-off-by: WangYuli <[email protected]>