Miscellaneous Updates (const-correctness, logic fixes, etc.) (#126)

* Update lib/rocprofiler/hsa/hsa.cpp

- fix logic for constructing callback_contexts and buffered_contexts arrays

* Update include/rocprofiler/{agent,fwd,pc_sampling}.h

- remove rocprofiler_pc_sampling_config_array_t due to const problems
- update rocprofiler_agent_t to use arrays to const data
- remove redundant rocprofiler_query_pc_sampling_agent_configurations
  - this implementation is quite literally looking up info in the agent struct that was passed

* Update lib/rocprofiler/pc_sampling.cpp

- remove rocprofiler_query_pc_sampling_agent_configurations

* update lib/rocprofiler/agent.cpp

- handle const fields
- make mi200_pc_sampling_config variable static

* Update lib/rocprofiler/tests/agent.cpp

- tweak to pc_sampling_configs offset

* Update samples/pc_sampling

- Update sample to reflect minor tweaks to pc_sampling_configs in rocprofiler_agent_t

* Update CI workflow

- remove 'if: ${{ always() }}'
  - I suspect this is why the jobs do not cancel in progress correctly

.github/workflows/continuous_integration.yml

@@ -58,7 +58,6 @@ jobs:
       image: compute-artifactory.amd.com:5000/rocm-plus-docker/compute-rocm-dkms-no-npi-hipclang:${{ needs.get_latest_mainline_build_number.outputs.LATEST_BUILD_NUMBER }}-${{ matrix.os }}-stg1
       options: --memory=128g --cpus=32 --ipc=host --device=/dev/kfd --device=/dev/dri${{ matrix.device }} --group-add video --cap-add=SYS_PTRACE --cap-add CAP_SYS_PTRACE --cap-add CAP_SYS_ADMIN --security-opt seccomp=unconfined
 
-    if: ${{ always() }}
     needs: get_latest_mainline_build_number
 
     steps:
@@ -147,7 +146,6 @@ jobs:
       image: compute-artifactory.amd.com:5000/rocm-plus-docker/compute-rocm-dkms-no-npi-hipclang:${{ needs.get_latest_mainline_build_number.outputs.LATEST_BUILD_NUMBER }}-${{ matrix.os }}-stg1
       options: --memory=128g --cpus=32 --ipc=host --device=/dev/kfd --device=/dev/dri${{ matrix.device }} --group-add video --cap-add=SYS_PTRACE --cap-add CAP_SYS_PTRACE --cap-add CAP_SYS_ADMIN --security-opt seccomp=unconfined
 
-    if: ${{ always() }}
     needs: get_latest_mainline_build_number
 
     steps:
@@ -247,7 +245,6 @@ jobs:
       image: compute-artifactory.amd.com:5000/rocm-plus-docker/compute-rocm-dkms-no-npi-hipclang:${{ needs.get_latest_mainline_build_number.outputs.LATEST_BUILD_NUMBER }}-${{ matrix.os }}-stg1
       options: --privileged --ipc=host --device=/dev/kfd --device=/dev/dri${{ matrix.device }} --group-add video --cap-add=SYS_PTRACE --cap-add CAP_SYS_PTRACE --cap-add CAP_SYS_ADMIN --security-opt seccomp=unconfined
 
-    if: ${{ always() }}
     needs: get_latest_mainline_build_number
 
     steps: