Fix Coverity Issue 9006656. In nandbcb_set_boot_config, an integer overflow occurs, with the result converted to a wider integer type. Signed-off-by: Ye Li <ye.li@nxp.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>