drivers: i3c: Correct initialization order

The current initialization sequence enables the I3C controller before
setting the controller information, which can result in improper setup
and cause the controller to not function as expected.

Fix the initialization order by ensuring that the controller information
is set prior to enabling the controller.

Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Signed-off-by: Balanakakamal V <balanakakamal.v@amd.com>