[FEATURE] Feature request - Port to Tinkerboard S

[bSchnepp]

Issue Checklist

• A related or similar issue is not already marked as open
• Another issue describing a similar feature has not already been marked as wontfix or closed
• This feature is not already present in the software

=====================================================
Feature Description
Support should be added to this board by modifying the relevant bootloader code and adapting necessary components to allow pantheon to boot.

Feature Benefits
List the reasons why this feature would be beneficial

• A number of similar boards exist
• The RK3328 is widely available to develop on: many boards are in stock and available
• Support under Linux appears stable
• Similar overall to the RK3399, of which debugging over SWD is well documented

Use case examples
List examples where this feature could be useful for end users.

• Availability on real hardware
• Well-known and supported GPU
• Something that's physical and can be actually connected to something

Additional information
This is something to revisit in a few months: just an idea to look through later.