Enable (=m) USB serial, ACM, printer support for RV1106/RK3506 families

[vidplace7]

Description

Enable USB serial, cdc_acm and printer support. Required for addressing USB printers on RV1106 and RK3506 families.

How Has This Been Tested?

• luckfox-pico-mini trixie, compile tested
• luckfox-lyra-zero-w trixie, compile tested

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings

Summary by CodeRabbit

• New Features
  • Added support for USB ACM (serial) devices and USB printers.
  • Enabled USB serial support as loadable modules for improved flexibility.
  • Retained support for USB storage and DWC2 controllers.

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📝 Walkthrough

Walkthrough

The PR updates two Rockchip vendor kernel configurations. USB ACM, printer, and serial drivers are enabled as loadable modules. Existing USB storage and controller support remains enabled.

Changes

USB kernel configuration

Layer / File(s)	Summary
Enable USB driver modules config/kernel/linux-rockchip-rv1106-vendor.config, config/kernel/linux-rockchip-vendor.config	Adds modular USB ACM, printer, and serial drivers. Changes RV1106 USB serial support from built in to modular. Retains existing USB storage and controller support.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• armbian/build#10050: Modifies related Linux kernel USB serial module configuration.

Suggested labels: size/small

Suggested reviewers: amazingfate, paolosabatino, igorpecovnik

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change by naming the USB serial, ACM, and printer support enabled for the affected hardware families.

✨ Finishing Touches

🧪 Generate unit tests (beta)

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@config/kernel/linux-rockchip-rv1106-vendor.config`:
- Around line 443-447: Add a usable USB-to-serial converter driver alongside
CONFIG_USB_SERIAL in both config/kernel/linux-rockchip-rv1106-vendor.config
lines 443-447 and config/kernel/linux-rockchip-vendor.config lines 468-472,
selecting CONFIG_USB_SERIAL_GENERIC with the appropriate built-in or module
setting for the target image, or the required chipset-specific driver. Ensure
both configurations provide an actual bound USB-serial driver, not only the
framework.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

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📥 Commits

Reviewing files that changed from the base of the PR and between 65669f8 and be1bc4a.

📒 Files selected for processing (2)

• config/kernel/linux-rockchip-rv1106-vendor.config
• config/kernel/linux-rockchip-vendor.config

[github-actions]

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