Some I3C device drivers need to know which entry matches the
i3c_device object passed to the probe function

Let's move i3c_device_match_id() to device.c and export it so it can be
used by drivers.
Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>