drm/tidss: Initialize OLDI after dispc_init

commit 554d9d19207543c566291334e30b124cb5b4b45d from
git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git



Parse OLDI related DT properties and populate OLDI
related structs and add OLDI bridge only after display controller
is initialized as we also reset the display controller there.

This is to avoid unnecessary probe defer if panel driver is
not probed yet.

Suggested-by: Aradhya Bhatia <a-bhatia1@ti.com>
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>