NXP backend: Add QuantizeFusedConvBnBiasAtenPass call to integration tests pipeline

[StrycekSimon]

Adds call to QuantizeFusedConvBnBiasAtenPass in conversion pipeline for integration tests. The pass enables QAT support for models containing biasless convolutions in integration tests.

Test plan

Covered by NXP internal tests.

cc @robert-kalmar @JakeStevens @digantdesai

[pytorch-bot]

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

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[Copilot]

Pull request overview

Adds an ATen-graph transform into the NXP integration-test quantization flow to better support QAT graphs that include biasless convolutions (by ensuring fused/introduced conv biases are quantized/dequantized appropriately before lowering).

Changes:

• Import QuantizeFusedConvBnBiasAtenPass into the NXP integration-test utilities.
• Invoke QuantizeFusedConvBnBiasAtenPass(default_zero_bias=True) after convert_pt2e(...) when use_qat is enabled.

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[Copilot]

Pull request overview

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[JakeStevens]

seems nxp tests are failing with incorrect number of nodes.

Doe sthis change reduce number of q/dq since activation and batch norm are observed togetehr with conv if fusable?

[StrycekSimon]

I will look at this in a sec. I was primarily trying to resolve our internal tests hanging on this PR.

Edit: The tests expected bias to be introduced in biasless convolutions. This changed for PTQ after I introduced the conditioning of QuantizeFusedConvBnBiasAtenPass. I changed the default_zero_bias=False and adjusted the tests.

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Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

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