Add X35S documentation

docs/devices/powkiddy/x35s.md

@@ -0,0 +1,45 @@
+# Powkiddy X35S
+
+![](../../_inc/images/devices/powkiddy-x35s.png){ .off-glb }
+
+## Overview
+{%set hw_display = '3.5-inch 640*480' %}
+{%set hw_emmc = '4 GB' %}
+{%set hw_connectivity = 'None' %}
+{%set hw_ram = '1 GB LPDDR4X' %}
+{% include "platforms/rk3566.md" %}
+
+## Features
+
+| Feature                 | Notes |
+| -- | -- |
+| :material-harddisk: Storage | ROCKNIX can be installed to the eMMC or run from an SD Card, and a second SD card can be used to store games |
+
+## Controls
+
+{%set btn_north = 'X(NORTH)' %}
+{%set btn_west = 'Y(WEST)' %}
+{%set btn_south = 'B(SOUTH)' %}
+{%set btn_east = 'A(EAST)' %}
+
+{%include 'controls/retroarch.md' %}
+{%include 'controls/mednafen.md' %}
+{%include 'controls/mupen64plus.md' %}
+{%include 'controls/ppsspp.md' %}
+{%include 'controls/hypseus-singe.md' %}
+{%include 'controls/extra.md' %}
+
+## Emulators
+
+- [Platform Documentation (RK3566)](https://github.com/ROCKNIX/distribution/blob/main/documentation/PER_DEVICE_DOCUMENTATION/RK3566)
+
+## Notes
+
+### Installation
+
+Download the latest `RK3566-X55` version of ROCKNIX from the button below and follow the instructions listed on the [Install](../../../play/install/) page.
+
+Once you have burned the image to an SD card, you will need to modify the file extlinux/extlinux.conf on the FAT partition, and change x55 to x35s on the FDT line.
+
+[![Latest Version](https://img.shields.io/github/release/ROCKNIX/distribution.svg?labelColor=111111&color=FF5555&label=Latest&style=flat#only-light)](https://github.com/ROCKNIX/distribution/releases/latest)
+[![Latest Version](https://img.shields.io/github/release/ROCKNIX/distribution.svg?labelColor=dddddd&color=FF5555&label=Latest&style=flat#only-dark)](https://github.com/ROCKNIX/distribution/releases/latest)

mkdocs.yml

@@ -231,6 +231,7 @@ nav:
         - RK2023: devices/powkiddy/rk2023.md
         - RGB20SX: devices/powkiddy/rgb20sx.md
         - RGB30: devices/powkiddy/rgb30.md
+        - X35S: devices/powkiddy/x35s.md
         - X55: devices/powkiddy/x55.md
         - XU10: devices/powkiddy/xu10.md
       - Retroid: