add SAR2230 for backend

[billmguo]

Summary: add SAR2230 for backend

Differential Revision: D84070438

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/14858

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[meta-codesync]

@billmguo has exported this pull request. If you are a Meta employee, you can view the originating Diff in D84070438.

[github-actions]

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[billmguo]

@pytorchbot label "topic: not user facing"

[haowhsu-quic]

Could you help update docs/source/backends-qualcomm.md & backends/qualcomm/README.md as well? thanks.

[cccclai]

I revert the changes in #14859 for two reasons

• missing changes for supporting new SoCs
• this change require qnn 2.39

Let's test the PR in a real device and then merge it