Post memory planning passes.

[hsharma35]

Summary:
Adds passes that run after memory planning.

1. Convert idma load/store to idma copy. This saves code space.
2. Remove dtcm-to-dtcm idma copy. This saves cycles.

Reviewed By: zonglinpeng

Differential Revision: D77232764

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❌ 6 Cancelled Jobs, 1 Unrelated Failure

As of commit 461971c with merge base 874d3c1 ():

CANCELLED JOBS - The following jobs were cancelled. Please retry:

• periodic / test-models-linux (buck2, mv3, portable, linux.2xlarge, 90) / linux-job (gh)
• periodic / test-models-linux (buck2, mv3, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job (gh)
• periodic / test-models-linux (cmake, mv3, portable, linux.2xlarge, 90) / linux-job (gh)
• periodic / test-models-linux (cmake, mv3, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job (gh)
• periodic / test-models-linux (cmake, vit, portable, linux.2xlarge, 90) / linux-job (gh)
• periodic / test-models-linux (cmake, vit, xnnpack-quantization-delegation, linux.2xlarge, 90) / linux-job (gh)

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / test-models-linux (resnet50, portable, linux.2xlarge) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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This pull request was exported from Phabricator. Differential Revision: D77232764

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