Qualcomm AI Engine Direct - Fix Hexagon Tool Chain Build

[winskuo-quic]

Summary

Minor fix on dtype for log message. Hexagon tool chain has compile error in mainline.
We will be introducing Hexagon build for QNN ExecuTorch in future to reduce these errors from happening.

Test plan

Passing Hexagon Build for build.sh

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19625

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