Add APM X-Gene ACPI I2C device support by hooks into existent
ACPI APD driver.  To fully enable support, require another
patch to add the X-Gene ACPI node into the DW I2C driver.
Signed-off-by: NLoc Ho <lho@apm.com>
Reviewed-by: NKen Xue <Ken.Xue@amd.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>