fix(nv14/el18/pl18u): Telemetry RX DMA can be enabled for non-DAC audio radios

[richardclli]

Summary of changes:

Enable RX DMA for S.Port if non-DAC audio is used

Summary by CodeRabbit

• Bug Fixes
  • Enabled telemetry functionality for specific radio hardware models, restoring reliable data transmission and improving monitoring for affected devices.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: a2ad1b8a-9be5-4cf9-86ad-7035c2a13404

📥 Commits

Reviewing files that changed from the base of the PR and between b47c0d7 and 6269f1d.

📒 Files selected for processing (1)

• radio/src/targets/pl18/hal.h

🚧 Files skipped from review as they are similar to previous changes (1)

• radio/src/targets/pl18/hal.h

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📝 Walkthrough

Walkthrough

Hardware-specific telemetry DMA macros in radio/src/targets/pl18/hal.h are uncommented and conditionally defined when RADIO_NV14_FAMILY or RADIO_PL18U is set.

Changes

Telemetry DMA Configuration

Layer / File(s)	Summary
Conditional telemetry DMA macros radio/src/targets/pl18/hal.h	TELEMETRY_DMA_Stream_RX and TELEMETRY_DMA_Channel_RX are defined inside `#if defined(RADIO_NV14_FAMILY)

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is incomplete. It lacks the issue reference (Fixes #) required by the template and provides minimal context.	Add the issue number (Fixes #7417) at the top and expand with details about why this change is needed and which audio configurations are affected.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: enabling telemetry RX DMA for non-DAC audio radios in specific models.
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.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch richardclli/fix-el18-pl18u-telerxdma

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