Add support for nRF54L

[zyp]

Detailed description

This PR adds support for nRF54L.

The functionality of this PR has been tested through an automated test script published here:

Your checklist for this pull request

• I've read the Code of Conduct
• I've read the guidelines for contributing to this repository
• It builds for hardware native (see Building the firmware)
• It builds as BMDA (see Building the BMDA)
• I've tested it to the best of my ability
• My commit messages provide a useful short description of what the commits do

Closing issues

N/A

[dragonmux]

We've already had a bit of a chat on Discord about the adi.c and adiv5.c changes and how to evolve those, so this review is purely on the new nRF54 support. There are a couple of things but nothing major 🙂 - we look forward to landing this!

[zyp]

Review comments addressed, and I also improved the RRAM routines to use the write buffer, and added a benchmark to my test script to measure the performance:

[dragonmux]

This is definitely a step in the right direction, nice work! Most of our review notes this round are stylistic in nature.

Please drop target/ from your commit messages as, per the contribution guidelines, it's not to be included in the prefix.

After those things have been taken care of we think this'll be ready for merge so we can get early nRF54L support in 😄

[dragonmux]

LGTM, merging. Thank you for the contribution!