Update hal_rpi_pico to be based on SDK v2.1

[ajf58]

Is your enhancement proposal related to a problem? Please describe.

Raspberry Pi Pico SDK v2.1.0 has now been released, and includes bugfixes and enhancement that are required by both in-tree and future additions to the project. See https://github.com/raspberrypi/pico-sdk/releases/tag/2.1.0

I think this would be a good first issue. The scope is well defined and local regression testing with an in-tree board (e.g. the Pico 1) would give a good level of confidence.

Describe the solution you'd like

• Update the hal_rpi_pico to be based on v2.1.0
• Update Zephyr's manifest to point at the new updated HAL.
• Update relevant documentation
• (If applicable) update drivers, device trees, samples, test to make use of fixes and/or new features.

Describe alternatives you've considered

• Do nothing, (the implicit default?).

Additional context

N/A.

[ajf58]

@soburi I notice that the bot has auto-assigned this to you, but I'm conscious you may be unwilling/unable to take this work on due to other commitments. Are you happy to look at this, or can this be assigned to one of a few people who've expressed an interest in contributing to Raspberry Pi support within Zephyr?

[soburi]

@soburi I notice that the bot has auto-assigned this to you, but I'm conscious you may be unwilling/unable to take this work on due to other commitments. Are you happy to look at this, or can this be assigned to one of a few people who've expressed an interest in contributing to Raspberry Pi support within Zephyr?

No problem.