Install fixes (#2228)

* Remove install instructions for unsuported RHEL 8.8 and 9.2

Current ROCm release does not support these versions of RHEL

* Centralize disclaimers and perquisites for installation

- Move the single-version to multi-version diclaimer to the install
  overview page where single vs multi installs are discussed.
- Move the installation of kernel-headers and development packages
  to the install preparation page. Unify it mainly from the quick start
  content.

* s/Name/name/ in repository config files for RHEL

The repository name can be set as `name=><name>` instead of `Name`,
otherwise yum complains about the repo not having a name, e.g:
```output
Repository 'ROCm-5.3.3' is missing name in configuration, using id.
```

This is fixed with this commit.

* Clean up render/video group section on prerequisites

* Installation and Upgrade restructuring & fixes

- Fix the rocm package urls for RHEL in the install & upgrade guides
  - RHEL8 and 9 have different URLs, add a tab-set similar to ubuntu
    for them.
- Fix the package URL in the upgrade guide for SLES (previously pointed
  to the amdgpu url)
- Change the apt-signing key download and conversion to the method used
  in the quick start guide, which is the recommended by ubuntu maintainers
- Change the install steps from list items to rubrics with numbered entries
  which is more readable and matches the style in the quick start guide
- Do not pass `--append` to `tee` in the upgrade guide, because it is
  meant to overwrite.
- Split the one long tab-set to multiple tab-sets in the upgrade guide
  to improve readability

docs/deploy/linux/prerequisites.md

@@ -49,20 +49,66 @@ Verify the kernel version using the following steps:
    uname -srmv
    ```
 
-2. Confirm that the obtained kernel version information matches with System
-   Requirements.
-
    **Example:** The output of the command above lists the kernel version in the
    following format:
 
-   ```shell
+   ```output
    Linux 5.15.0-46-generic #44~20.04.5-Ubuntu SMP Fri Jun 24 13:27:29 UTC 2022 x86_64
    ```
 
-### Setting Permissions for Groups
+2. Confirm that the obtained kernel version information matches with system
+   requirements as listed in {ref}`supported_distributions`.
+
+## Kernel headers and development packages
+
+The driver package uses
+[{abbr}`DKMS (Dynamic Kernel Module Support)`][DKMS-wiki] to build
+the `amdgpu-dkms` module (driver) for the installed kernels. This requires the
+Linux kernel headers and modules to be installed for each. Usually these are
+automatically installed with the kernel, but if you have multiple kernel
+versions or you have downloaded the kernel images and not the kernel
+meta-packages then they must be manually installed.
+
+[DKMS-wiki]: https://en.wikipedia.org/wiki/Dynamic_Kernel_Module_Support
+
+To install for the currently active kernel run the command corresponding
+to your distribution.
+
+::::{tab-set}
+:::{tab-item} Ubuntu
+:sync: ubuntu
+
+```shell
+sudo apt install "linux-headers-$(uname -r)" "linux-modules-extra-$(uname -r)"
+```
+
+:::
+
+:::{tab-item} Red Hat Enterprise Linux
+:sync: RHEL
+
+```shell
+sudo yum install kernel-headers kernel-devel
+```
+
+:::
+
+:::{tab-item} SUSE Linux Enterprise Server
+:sync: SLES
+
+```shell
+sudo zypper install kernel-default-devel
+```
+
+:::
+::::
+
+## Setting Permissions for Groups
 
 This section provides steps to add any current user to a video group to access
 GPU resources.
+Use of the video group is recommended for all ROCm-supported operating
+systems.
 
 1. To check the groups in your system, issue the following command:
 
@@ -70,22 +116,17 @@ GPU resources.
    groups
    ```
 
-2. Add yourself to the `render` or `video` group using the following instruction:
+2. Add yourself to the `render` and `video` group using the command:
 
    ```shell
-   sudo usermod -a -G render $LOGNAME
-   # OR
-   sudo usermod -a -G video $LOGNAME
+   sudo usermod -a -G render,video $LOGNAME
    ```
 
-3. Use of the video group is recommended for all ROCm-supported operating
-   systems.
-
 To add all future users to the `video` and `render` groups by default, run
 the following commands:
 
-   ```shell
-   echo 'ADD_EXTRA_GROUPS=1' | sudo tee -a /etc/adduser.conf
-   echo 'EXTRA_GROUPS=video' | sudo tee -a /etc/adduser.conf
-   echo 'EXTRA_GROUPS=render' | sudo tee -a /etc/adduser.conf
-   ```
+```shell
+echo 'ADD_EXTRA_GROUPS=1' | sudo tee -a /etc/adduser.conf
+echo 'EXTRA_GROUPS=video' | sudo tee -a /etc/adduser.conf
+echo 'EXTRA_GROUPS=render' | sudo tee -a /etc/adduser.conf
+```