media: i2c: Add ACPI support to ov8865

The ov8865 sensor is sometimes found on x86 platforms enumerated via ACPI.
Add an ACPI match table to the driver so that it's probed on those
platforms.

Signed-off-by: Daniel Scally <djrscally@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>