DOCS-3739: Recommend custom linux board (#4148)

Author: npentrel

docs/operate/reference/components/board/_index.md

@@ -58,7 +58,11 @@ For additional configuration information, click on the model name:
 
 {{<resources api="rdk:component:board" type="board" no-intro="true">}}
 
-{{< readfile "/static/include/create-your-own-mr.md" >}}
+{{< alert title="Add support for other models" color="tip" >}}
+If none of the existing models fit your use case, you can [create a {{< glossary_tooltip term_id="modular-resource" text="modular resource" >}}](/operate/get-started/other-hardware/) to add support for it.
+
+For Linux boards like the Odroid C4, Pumpkin, or, Banana Pi, you can also use the [`customlinux` board](https://github.com/viam-modules/customlinux/blob/main/README.md).
+{{< /alert >}}
 
 {{% /tab %}}
 {{% tab name="Micro-RDK" %}}