Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

To modify the PWM-fan temperature control policy of fine3399 to adjust the fan speed to a lower level. Integrating support for xiaobaonas and fine3399 boards into the rockchip64-6.9 kernel

Documentation summary for feature / change

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• [x] short description (copy / paste of PR title)
• [ ] summary (description relevant for end users)
• [ ] example of usage (how to see this in function)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• [x] Test A
• [ ] Test B

Checklist:

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• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [ ] Any dependent changes have been merged and published in downstream modules

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