batman-adv: drop kernel 6.12 dependency

[sanderpqr]

📦 Package Details

Maintainer: @simonwunderlich

Description:
All targets have been switched to kernel 6.18, where CRC32C is part of the built-in CRC library. Drop the conditional kmod-lib-crc32c dependency, as kmod-lib-crc32c is going away together with kernel 6.12 support.

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✅ Formalities

• I have reviewed the CONTRIBUTING.md file for detailed contributing guidelines.

[openwrt]

Formality Check: Suggestions Available

We checked this pull request against the contribution guidelines. Here is what needs your attention:

⚠️ STYLISTIC WARNINGS & SUGGESTIONS

Package Release Audit:

• ⚠️ Content changed in these packages, but without a PKG_RELEASE or version bump:

  • net/batman-adv

  Increment PKG_RELEASE by 1 (or bump PKG_VERSION/PKG_SOURCE_DATE and reset PKG_RELEASE to 1) so users receive the update.

Do not increment release for minor changes. Cosmetic edits (e.g., typos in comments, copyright updates, formatting/whitespace), changing the package maintainer (PKG_MAINTAINER), or updating source download info (PKG_SOURCE_URL / PKG_HASH) do not require incrementing PKG_RELEASE.

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_{Something broken? Consider reporting an issue.
Running version 37cc78e deployed on 2026-10-15 12:36:36 CEST}