jethubj200: update JetHub D2 DT file for I2C display and GPIO expande…

[QwaSeeK]

Description

Add device tree support for an I2C display and an I2C GPIO expander.

How Has This Been Tested?

• Image builds and flashes successfully.
• Display (SSD1306) works as expected.
• GPIO expander works as expected.
• Tested on: JetHub D2.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[github-actions]

✅ This PR has been reviewed and approved — all set for merge!