spinand_read_reg_op
return spinand_read_reg_op(spinand, REG_STATUS, status);
ret = spinand_read_reg_op(spinand, REG_CFG,
ret = spinand_read_reg_op(spinand, W25N0XJW_SR4, &sr4);
int spinand_read_reg_op(struct spinand_device *spinand, u8 reg, u8 *val);