mtd: nand: arasan: Remove hardcoded bbt option

Bad block table option is hardcoded to read from flash with
NAND_BBT_USE_FLASH option. This decision should be done based on DT
property. Remove this hardcoding, to be able to use DT property.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230224050709.30014-2-ashok.reddy.soma@amd.com


Signed-off-by: Michal Simek <michal.simek@amd.com>