Refactor Specs + Mi300 Enhancements

[coleramos425]

This PR refactors the specs.py module by cleaning up code, reducing overhead, and improving extensibility.

• SoC-specific specs properties that require hardcoding have been relegated to their respective SoC classes
• MachineSpecs() class init is now responsible for defining all class properties. Class has handy helper functions which eliminate the need for duplicate code.

Out of convenience this PR also layers on #247, #251, #252, and #255 (thanks @skyreflectedinmirrors).

2/27 TODO:

• [x] Still need an expanded explanation of MachineSpecs() properties. I'm thinking this might be a good place to add that (since its easily accessible via --specs)

• [x] Still need to add some sort of version entry to MachineSpecs() output (and subsequently sysinfo.csv) to distinguish different versions of output/headers. Ideally throwing a warning when versions don't align.

• [x] I'd like to remove this hardcoded reference to gfx90a which adds roofline to ip_blocks in sysinfo. This is in the spirit of us moving all this SoC material to subclasses. Not required, but nice to have

[coleramos425]

@skyreflectedinmirrors I made some progress on L2 Cache per channel panel and the GUI filtering is now fixed. You should be good to resume verification whenever you're ready.

[skyreflectedinmirrors]

Opened another PR (https://github.com/AMDResearch/omniperf/pull/280) with a few touchups, will have the specs description done today.

[skyreflectedinmirrors]

RE:

I'd like to remove this hardcoded reference to gfx90a which adds roofline to ip_blocks in sysinfo. This is in the spirit of us moving all this SoC material to subclasses. Not required, but nice to have

I think the easiest way is to put a flag on whether rooflines are allowed in each SOC class (if it doesn't exist already), then pass the SOC in from the profiler: https://github.com/AMDResearch/omniperf/blob/2d92bcff2e3de9e15ad2e0abf306b5d350143ae8/src/omniperf_profile/profiler_base.py#L352

We don't technically have access to the SOC from the roofline callsite (https://github.com/AMDResearch/omniperf/blob/2d92bcff2e3de9e15ad2e0abf306b5d350143ae8/src/roofline.py#L343), but I'd assume roofonly is true here?

[coleramos425]

I think the easiest way is to put a flag on whether rooflines are allowed in each SOC class (if it doesn't exist already), then pass the SOC in from the profiler:

Done. Thanks for the suggestion, Nick :)