qcs6490: Fix sound card cannot be detected

[kasimling]

It seems wcd938x driver module is not loaded automatically by default. Also use GITHUB_SOURCE to respect proxy settings for building.

You can refer to https://forum.armbian.com/topic/57121-latest-armbian-build-hdmi-audio-support-fix/ for more issue details.

Summary by CodeRabbit

• Chores
  • Enhanced audio support initialization for Radxa Dragon Q6a devices
  • Improved build configuration management with more maintainable dependency resolution

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: d972ddf0-92d1-45fd-b503-c41777c287b1

📥 Commits

Reviewing files that changed from the base of the PR and between 2d17191 and cfa7144.

📒 Files selected for processing (1)

• config/boards/radxa-dragon-q6a.conf

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📝 Walkthrough

Walkthrough

Configuration updates to the Radxa Dragon Q6A board setup: enhanced audio module initialization in the initramfs by creating modules-load.d directory and configuring the WCD938X sound codec module, and refactored the ALSA UCM package URL to use a variable reference instead of a hardcoded URL.

Changes

Cohort / File(s)	Summary
Audio Module Configuration config/boards/radxa-dragon-q6a.conf	Extended BSP firmware initialization to create etc/modules-load.d/ directory and add wcd938x.conf for loading the snd-soc-wcd938x module. Updated ALSA UCM installation to use ${GITHUB_SOURCE} variable instead of hardcoded GitHub URL base.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 A rabbit's tune for audio so sweet,
Where modules load and codecs meet,
From hardcoded paths to variables true,
The Dragon's song rings fresh and new! 🎵

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'qcs6490: Fix sound card cannot be detected' directly corresponds to the main objective of the PR, which addresses an issue where the wcd938x driver module is not loaded automatically, preventing sound card detection.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[HeyMeco]

Thanks for sending this in. Will take a look at it today with some other Q6A improvements