Add missing links for sn32 eeprom

[tbowmo]

Adding missing defines for sn32 eeprom emulation in flash.

Types of Changes

• [x] Core
• [ ] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [ ] Keyboard (addition or update)
• [ ] Keymap/layout/userspace (addition or update)
• [ ] Documentation

Issues Fixed or Closed by This PR

Checklist

• [ ] My code follows the code style of this project: C, Python
• [ ] I have read the PR Checklist document and have made the appropriate changes.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[dexter93]

Please split the keyboard related stuff and leave this PR only for platform side commits

[tbowmo]

@dexter93 I removed k8 stuff from this pr. So should only be core files now.

[tbowmo]

@dexter93 should this be merged, or abandoned?