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

Replace manually authored hardware features table with the new Zephyr
board supported hardware directive which automatically generates an
up-to-date table based on the boards' Devicetree.

Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>

boards/holyiot/yj16019/doc/index.rst

@@ -30,34 +30,7 @@ The nRF52832 of the Holyiot YJ-16019 is clocked by an external crystal with a fr
 Supported Features
 ==================
 
-The holyiot_yj16019 board configuration supports the following
-hardware features:
-
-+-----------+------------+----------------------+
-| Interface | Controller | Driver/Component     |
-+===========+============+======================+
-| CLOCK     | on-chip    | clock_control        |
-+-----------+------------+----------------------+
-| FLASH     | on-chip    | flash                |
-+-----------+------------+----------------------+
-| GPIO      | on-chip    | gpio                 |
-+-----------+------------+----------------------+
-| MPU       | on-chip    | arch/arm             |
-+-----------+------------+----------------------+
-| NVIC      | on-chip    | arch/arm             |
-+-----------+------------+----------------------+
-| PWM       | on-chip    | pwm                  |
-+-----------+------------+----------------------+
-| RADIO     | on-chip    | Bluetooth            |
-+-----------+------------+----------------------+
-| RTC       | on-chip    | system clock         |
-+-----------+------------+----------------------+
-| RTT       | Segger     | console              |
-+-----------+------------+----------------------+
-| WDT       | on-chip    | watchdog             |
-+-----------+------------+----------------------+
-
-Other hardware features have not been enabled yet for this board.
+.. zephyr:board-supported-hw::
 
 Connections and IOs
 ===================