arm64: dts: zynqmp: Enable nand-on-flash-bbt in DT by default

By default enable nand-on-flash-bbt DT flag, so that driver always refers
to the bad block table(bbt) present on the flash device.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230224050709.30014-5-ashok.reddy.soma@amd.com


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