nanopi-m6: make it standard supported

[efectn]

Description

Convert nanopi.wip to nanopi.conf since it is ready to be standard supported.

GitHub issue reference:
Jira reference number [AR-9999]

Documentation summary for feature / change

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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.

• Test A
• Test B

Checklist:

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