recipes-bsp: add recipe for GRUB 2.12

[jakogut]

This version changes how kernel images are booted, passing them to the EFI boot services LoadImage method, which uses EFISTUB and retains the TPM event log in memory.

Copy this recipe from Poky rev 43f9098.

More info: https://edk2.groups.io/g/devel/topic/93730585

This is required for PCR7 sealing with secure boot, as it makes the TPM event log available.

Change-type: patch

---

Contributor checklist

• [ ] Changes have been tested
  • [ ] Covered in automated test suite
  • [ ] Manual test case recorded
• [ ] Change-type present on at least one commit
• [ ] Signed-off-by is present
• [ ] The PR complies with the Open Embedded Commit Patch Message Guidelines

Reviewer Guidelines

• When submitting a review, please pick:
  • 'Approve' if this change would be acceptable in the codebase (even if there are minor or cosmetic tweaks that could be improved).
  • 'Request Changes' if this change would not be acceptable in our codebase (e.g. bugs, changes that will make development harder in future, security/performance issues, etc).
  • 'Comment' if you don't feel you have enough information to decide either way (e.g. if you have major questions, or you don't understand the context of the change sufficiently to fully review yourself, but want to make a comment)

[jakogut]

@resin-jenkins retest this please

[jakogut]

@resin-jenkins retest this please

[jakogut]

@resin-jenkins retest this please

[jakogut]

@resin-jenkins retest this please

[jakogut]

@resin-jenkins retest this please

[jakogut]

@resin-jenkins retest this please

[jakogut]

Closing in favor of https://github.com/balena-os/meta-balena/pull/3259, which is already passing tests