i2c: Add support for Intel LJCA USB I2C driver

Implements the I2C function of Intel USB-I2C/GPIO/SPI adapter device
named "La Jolla Cove Adapter" (LJCA). It communicate with LJCA I2C
module with specific protocol through interfaces exported by LJCA
USB driver.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Wolfram Sang <wsa@kernel.org>
Link: https://lore.kernel.org/r/1696833205-16716-3-git-send-email-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>