drm: zynq_drm: drv: Disable deferred probing

Disable the deferred probing due to some issue. Use late_initcall()
to load zynq_drm if MODULE is not defined.

Signed-off-by: hyun woo kwon <hyunk@xilinx.com>
arm: arm: dts: zc702-drm-ubuntu: Add a dts for ubuntu

Add a dts for Ubuntu.

Signed-off-by: hyun woo kwon <hyunk@xilinx.com>