sdcc: declare indirect deps with linkage

[chenrui333]

• [x] Have you followed the guidelines for contributing?
• [x] Have you ensured that your commits follow the commit style guide?
• [x] Have you checked that there aren't other open pull requests for the same formula update/change?
• [x] Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• [x] Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• [x] Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

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https://github.com/Homebrew/homebrew-core/actions/runs/10259102515/job/28383273733?pr=180172#step:3:1391

[chenrui333]

  make[4]: Leaving directory '/tmp/sdcc-20240806-10716-om8gax/sdcc-4.4.0/device/lib'
  /usr/bin/make clean_intermediate
  make[4]: Entering directory '/tmp/sdcc-20240806-10716-om8gax/sdcc-4.4.0/device/lib'
  rm -f build/ds400/*.lst build/ds400/*.sym
  make[4]: Leaving directory '/tmp/sdcc-20240806-10716-om8gax/sdcc-4.4.0/device/lib'
  make[3]: Leaving directory '/tmp/sdcc-20240806-10716-om8gax/sdcc-4.4.0/device/lib'
  make[2]: Leaving directory '/tmp/sdcc-20240806-10716-om8gax/sdcc-4.4.0/device/lib'
  make[1]: *** [Makefile:294: all] Error 2
  make[1]: Leaving directory '/tmp/sdcc-20240806-10716-om8gax/sdcc-4.4.0/device/lib'
  make: *** [Makefile:175: sdcc-device-lib] Error 2

[github-actions[bot]]

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