Samsung SoCs use the own OneNAND controler and detect OneNAND chip at power on.
To use this feature, introduce the chip_probe function.

Also remove workaround for Samsung SoCs.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>