NXP backend: Enable MM and AddMM with new Neutron flow.

[MartinPavella]

Summary

This PR enables the MM and AddMM operators in the NXP backend using the new Neutron C MLIR flow.

Test plan

Unit tests provided.

cc @robert-kalmar @JakeStevens @digantdesai @rascani

[pytorch-bot]

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❌ 5 New Failures, 3 Unrelated Failures

As of commit 896a8c2 with merge base 55c54c7 ():

NEW FAILURES - The following jobs have failed:

• pull / test-lora-multimethod-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 71b6c20bd57c6ac0f3209256539eda1dac87f7db1405eef8c1998d0459bf475d /exec failed with exit code 1
• pull / test-phi-3-mini-runner-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 99d7a902067505e4537ce8d033da8796d8ea2de5999be887e563def20045c5c6 /exec failed with exit code 1
• pull / unittest / linux / linux-job (gh)
  RuntimeError: Command docker exec -t d618de99c6b5ed01bd8e96a78c22c5fe494ee8e8eacb06529e951faa4c4079e5 /exec failed with exit code 1
• pull / unittest-editable / linux / linux-job (gh)
  RuntimeError: Command docker exec -t 92859b7c48d21392f604d0edde7d25b7ed4c3ba3f552be44b2d37a380ff82fff /exec failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t 4ff451c79b1167119d236ae21c7969aa1bdc2b44a51c4beb6001c23bff7fd405 /exec failed with exit code 2

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / test-llama-runner-qnn-linux (fp32, qnn_16a16w, qnn) / linux-job (gh) (trunk failure)
• pull / unittest / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[linux-foundation-easycla]

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[MartinPavella]

@novak-vaclav, @irtrukhina please feel free to have a look as well.

[robert-kalmar]

But if you add filter, the default "QDQ nodes ignore does not applies anymore, right? What might be misleading.
Did you consider having the the is_not_qdq_node as default argument for filter_fn? Does the linter complains in this case?

[roman-janik-nxp]

LGTM, need to wait on internal tests.