Change path to person detect model header file from example directory to
where it is downloaded.

* Revert "Revert: PR #48758: TFLM: Remove uint8 support for CMSIS-NN kernels"

This reverts commit 6d8a184710164c7bcc41d3bd29fe4ef46836b6c9.

* TFLM: Increase stack size for bluepill

Change-Id: Ie278c6fff55cc620104c69167273a92a2d8e639a

* Update PPD unit test

* Remove leftovers from when PPD supported dynamic output dimensions.
* Correct number of output elements.
* Correct number of input elements for last unit test.

Change-Id: I66fd36d7eb48816986450033bc83c6b240d559b6

* Revert "TFLM: Increase stack size for bluepill"

This reverts commit c7fc2a0e0f16d2ab10c44389033822503c178e69.

With the fix to the PPD unit test from
6e39d12d7688143bd17acb2c5d422385baef9e0f, increasing the bluepill stack
size should not be necessary.

* Fix circular buffer formatting.

The CI check for clang-format needs to be fixed.
Co-authored-by: NAdvait Jain <advaitjain@google.com>
Co-authored-by: NAdvait Jain <advaitjain@users.noreply.github.com>

Confirmed that the following command passes:
```
./tensorflow/lite/micro/tools/ci_build/test_all_new.sh GITHUB_PRESUBMIT
```