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Z-Wave controllers: add Razberry hat config for Pi 5 (#31466)

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* Z-Wave controllers: add Razberry hat config for Pi 5

* Apply suggestions from code review

Co-authored-by: Jan Čermák <sairon@users.noreply.github.com>

---------

Co-authored-by: Jan Čermák <sairon@users.noreply.github.com>
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@ -85,9 +85,20 @@ It's totally normal for your Z-Wave stick to cycle through its LEDs (Yellow, Blu
### Razberry Board
You need to disable the on-board Bluetooth since the board requires the use of the hardware UART (and there's only one on the Pi3). You do this by adding the following to the end of `/boot/config.txt`:
On Raspberry Pi 3 and 4, you need to disable the on-board Bluetooth since the board requires the use of the hardware UART (whose pins are shared with the Bluetooth). You do this by adjusting the `/boot/config.txt`.
For both processes below you will need to insert your SD card into your PC and open the `/boot/config.txt` file with your favorite text editor.
For both processes below you will need to insert your SD card into your PC and open the configuration file with your favorite text editor.
- If you are using Home Assistant Operating System, once you mounted the disk, you will see the `config.txt` directly in the root directory.
- If you are using Home Assistant Supervised, the config file is stored in the boot folder: `/boot/config.txt`.
#### Raspberry Pi 5 procedure
Add the following parameters to the bottom of the `config.txt` file.
```text
dtoverlay=uart0
```
#### Raspberry Pi 4 procedure