Fix #11: restore missing irqs to the device.x file by securing generated file.

[solimike]

This PR fixes #11.

Simple change to the update script to secure the device.x file that svd2rust generated for us.

A couple of other changes that I hope are uncontroversial:

1. I got some unintended changes to the ordering of the items in the Peripherals struct when I was testing locally that I tracked down to my locale, so I've enforced C locale in the sorting script. I have only tested locally on Ubuntu 24.04 and in the GH Actions and not on MacOS. However, I can't think it will behave differently on the "Darwin" arm of the sort.
2. I have aligned the naming in the changelog with the naming that people settled on last time around (e.g. SW0_IRQ rather than SPAREIRQ0_IRQ)

Hope that's useful!

[9names]

@thejpster I don't have a mac to confirm the locale changes don't cause issues, can you confirm?
I will note that that the fix peripheral sort order stuff was annoying me and this PR has resolved it on Linux machine.

[solimike]

I have now managed to borrow a Mac and check out the "Darwin" path through sortFieldsAlphaNum.sh. All works as expected with no diffs from the Linux path.

[9names]

Thanks for testing that.
LGTM