fix(rpp): Remove Ofast compiling option from CMakeList.txt and change uchar type

[rrawther]

Motivation

This PR addresses compile warnings with Ofast flag. Instead changed to use -fast-math

Technical Details

Modified compile flags to use standard O3
Removed the use of uchar data-type from RPP test-suite which is only defined in OpenCV

Test Plan

CTests should pass

Test Result

  Start  1: rpp_sanity_test_brightness_host_f32

1/10 Test #1: rpp_sanity_test_brightness_host_f32 ......... Passed 3.64 sec
Start 2: rpp_sanity_test_brightness_hip_f32
2/10 Test #2: rpp_sanity_test_brightness_hip_f32 .......... Passed 7.75 sec
Start 3: rpp_qa_tests_tensor_image_host_all
3/10 Test #3: rpp_qa_tests_tensor_image_host_all .......... Passed 42.43 sec
Start 4: rpp_qa_tests_tensor_voxel_host_all
4/10 Test #4: rpp_qa_tests_tensor_voxel_host_all .......... Passed 2.26 sec
Start 5: rpp_qa_tests_tensor_misc_host_all
5/10 Test #5: rpp_qa_tests_tensor_misc_host_all ........... Passed 7.74 sec
Start 6: rpp_qa_tests_tensor_misc_host_test_type_1
6/10 Test #6: rpp_qa_tests_tensor_misc_host_test_type_1 ... Passed 402.60 sec
Start 7: rpp_qa_tests_tensor_image_hip_all
7/10 Test #7: rpp_qa_tests_tensor_image_hip_all ........... Passed 84.44 sec
Start 8: rpp_qa_tests_tensor_voxel_hip_all
8/10 Test #8: rpp_qa_tests_tensor_voxel_hip_all ........... Passed 4.62 sec
Start 9: rpp_qa_tests_tensor_misc_hip_all
9/10 Test #9: rpp_qa_tests_tensor_misc_hip_all ............ Passed 16.50 sec
Start 10: rpp_qa_tests_tensor_misc_hip_test_type_1
10/10 Test #10: rpp_qa_tests_tensor_misc_hip_test_type_1 .... Passed 348.19 sec

100% tests passed, 0 tests failed out of 10

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[therock-pr-bot]

❌ PR Check — Action Required

Check	Status	Details
🌿 Branch Name	✅ Pass	—
📝 PR Title/Description	✅ Pass	—
⛔ Forbidden Files	✅ Pass	—
🧪 Unit Test	❌ Fail	Error: Source/code files changed without an accompanying unit test. Expected: add at least one test file named like test_<name>.py / test_<name>.cpp (or <name>_test.*). Current: code file(s) changed: projects/rpp/utilities/test_suite/HIP/Tensor_voxel_hip.cpp, projects/rpp/utilities/test_suite/HOST/Tensor_voxel_host.cpp, projects/rpp/utilities/test_suite/rpp_test_suite_voxel.h; no test file found
🔎 pre-commit	⏳ Pending	⏳ Still running…
🚫 Draft PR	🔜 To Be Enabled	—
🚩 Feature Flag	🔜 To Be Enabled	—
📊 Code Coverage	🔜 To Be Enabled	—

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🚫 Please fix the failed policies

• ❌ Unit Test

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• ❌ Unit Test

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