This patch unifies the flex_bdry setting for module vs. built-in 
configuration of OneNAND.
Signed-off-by: NAmul Kumar Saha <amul.saha@samsung.com>
Signed-off-by: NVishak G <vishak.g@samsung.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>