Appropriately filter data based on -D and -H options (#163)

- Addresses concern that device metric tracks are still shown in Perfetto trace file even when only -H is specified to rocprof-sys-sample (and vice versa).
- Update sampling call-stack docs.

[ROCm/rocprofiler-systems commit: 8ae6651357]

projects/rocprofiler-systems/docs/how-to/sampling-call-stack.rst

@@ -275,7 +275,24 @@ The following snippets show how ``rocprof-sys-sample`` runs with various environ
       ROCP_TOOL_LIB=/opt/rocprofiler-systems/lib/librocprof-sys.so.1.7.1
 
 *  The next snippet shows the environment updates when ``rocprof-sys-sample`` enables
-   profiling, tracing, host process-sampling, device process-sampling, and all the available backends:
+   profiling, tracing, device process-sampling, and does not enable host process-sampling:
+
+   .. code-block:: shell
+
+      $ rocprof-sys-sample -PTD -- ./parallel-overhead-locks 30 4 100
+
+      LD_PRELOAD=/opt/rocprofiler-systems/lib/librocprof-sys-dl.so.1.7.1
+      ROCPROFSYS_CPU_FREQ_ENABLED=false
+      ROCPROFSYS_PROFILE=true
+      ROCPROFSYS_TRACE=true
+      ROCPROFSYS_USE_AMD_SMI=true
+      ROCPROFSYS_USE_PROCESS_SAMPLING=true
+      ROCPROFSYS_USE_SAMPLING=true
+      OMP_TOOL_LIBRARIES=/opt/rocprofiler-systems/lib/librocprof-sys-dl.so.1.7.1
+      ROCP_TOOL_LIB=/opt/rocprofiler-systems/lib/librocprof-sys.so.1.7.1
+
+*  The next snippet shows the environment updates when ``rocprof-sys-sample`` enables
+   profiling, tracing, device process-sampling, host process-sampling, and all the available backends:
 
    .. code-block:: shell
 
@@ -302,7 +319,7 @@ The following snippets show how ``rocprof-sys-sample`` runs with various environ
       ...
 
 *  The final snippet shows the environment updates when ``rocprof-sys-sample`` enables
-   profiling, tracing, host process-sampling, and device process-sampling,
+   profiling, tracing, device process-sampling, and host process-sampling,
    sets the output path to ``rocprof-sys-output`` and the output prefix to ``%tag%``, and disables
    all the available backends:
 
@@ -329,7 +346,7 @@ The following snippets show how ``rocprof-sys-sample`` runs with various environ
       ROCPROFSYS_PROFILE=true
       ...
 
-An rocprof-sys-sample example
+A rocprof-sys-sample example
 ========================================
 
 Here is the full output from the previous