doc: st: fix nucleo_h533re documentation

1. Changing default ADC sens line for ch0 on PA0
- `adc1` was documented to be sensing ch14 on PB1.
- This seems impossible because of a conflict between ch14
and UART2.
- `adc1` node is not defined in the board's DTS.

2. Set SPI1 NSS pin to PA4
- hardware NSS signal was documented to output on PC9.
- PC9 cannot be assigned as HW NSS for SPI1.
- HW NSS on SPI1 is by default on PA4, and remapeable to PA15.

3. Update number of UART lines available
- There are a total of 7 U(S)ARTs available on this board.

(cherry picked from commit 12bb405)

Original-Signed-off-by: Alex Fabre <alex.fabre@rtone.fr>
GitOrigin-RevId: 12bb405
Change-Id: I8684703c41e8b6a0a51b857e9ddda6ce7440066b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5666208
Reviewed-by: Ting Shen <phoenixshen@chromium.org>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Tested-by: Ting Shen <phoenixshen@chromium.org>

boards/st/nucleo_h533re/doc/index.rst

@@ -170,6 +170,8 @@ The Zephyr nucleo_h533re board configuration supports the following hardware fea
 +-----------+------------+-------------------------------------+
 | WATCHDOG | on-chip | independent watchdog |
 +-----------+------------+-------------------------------------+
+| ADC | on-chip | ADC Controller |
++-----------+------------+-------------------------------------+
 
 Other hardware features are not yet supported on this Zephyr port.
 
@@ -205,9 +207,9 @@ For more details please refer to `STM32H5 Nucleo-64 board User Manual`_.
 Default Zephyr Peripheral Mapping:
 ----------------------------------
 
-- ADC1 channel 14 input: PB1
+- ADC1 channel 0 input: PA0
 - USART1 TX/RX : PB14/PB15 (Arduino USART1)
-- SPI1 SCK/MISO/MOSI/NSS: PA5/PA6/PA7/PC9
+- SPI1 SCK/MISO/MOSI/NSS: PA5/PA6/PA7/PA4
 - UART2 TX/RX : PA2/PA3 (VCP)
 - USER_PB : PC13
 
@@ -221,7 +223,7 @@ as well as main PLL clock. By default System clock is driven by PLL clock at
 Serial Port
 -----------
 
-Nucleo H533RE board has up to 6 U(S)ARTs. The Zephyr console output is assigned
+Nucleo H533RE board has up to 4 USARTs, 2 UARTs, and one LPUART. The Zephyr console output is assigned
 to USART2. Default settings are 115200 8N1.
 
 Programming and Debugging

boards/st/nucleo_h533re/nucleo_h533re.yaml

@@ -14,4 +14,5 @@ supported:
  - watchdog
  - pwm
  - rtc
+ - adc
 vendor: st