doc: boards: witte: adopt zephyr:board-supported-hw directive

Supported Features

==================

The Zephyr Linum board configuration supports the following hardware

features:

+-----------+------------+-------------------------------------+

| Interface | Controller | Driver/Component                    |

+===========+============+=====================================+

| NVIC      | on-chip    | nested vector interrupt controller  |

+-----------+------------+-------------------------------------+

| UART      | on-chip    | serial port                         |

+-----------+------------+-------------------------------------+

| PINMUX    | on-chip    | pinmux                              |

+-----------+------------+-------------------------------------+

| GPIO      | on-chip    | gpio                                |

+-----------+------------+-------------------------------------+

| RTC       | on-chip    | counter                             |

+-----------+------------+-------------------------------------+

| I2C       | on-chip    | i2c                                 |

+-----------+------------+-------------------------------------+

| PWM       | on-chip    | pwm                                 |

+-----------+------------+-------------------------------------+

| ADC       | on-chip    | adc                                 |

+-----------+------------+-------------------------------------+

| RNG       | on-chip    | True Random number generator        |

+-----------+------------+-------------------------------------+

| ETHERNET  | on-chip    | ethernet                            |

+-----------+------------+-------------------------------------+

| SPI       | on-chip    | spi                                 |

+-----------+------------+-------------------------------------+

| USB       | on-chip    | usb_device                          |

+-----------+------------+-------------------------------------+

| CAN/CANFD | on-chip    | canbus                              |

+-----------+------------+-------------------------------------+

| LTDC      | on-chip    | LCD Interface                       |

+-----------+------------+-------------------------------------+

| FMC       | on-chip    | memc (SDRAM)                        |

+-----------+------------+-------------------------------------+

| SDMMC     | on-chip    | disk access                         |

+-----------+------------+-------------------------------------+

Other hardware features are not yet supported on this Zephyr port.

The default configuration can be found in the defconfig file:

:zephyr_file:`boards/witte/linum/linum_defconfig`

.. zephyr:board-supported-hw::

Default Zephyr Peripheral Mapping:

----------------------------------