Add roofline PDF output to general profiling runs (#774)

Change when Roofline PDFs are generated- during general profiling and --roof-only profiling (skip only when --no-roof option is present)

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Signed-off-by: Carrie Fallows <Carrie.Fallows@amd.com>

docs/how-to/profile/mode.rst

@@ -196,7 +196,9 @@ an Instinct MI210 vs an Instinct MI250.
    Additionally, you will notice a few extra files. An SoC parameters file,
    ``sysinfo.csv``, is created to reflect the target device settings. All
    profiling output is stored in ``log.txt``. Roofline-specific benchmark
-   results are stored in ``roofline.csv``.
+   results are stored in ``roofline.csv`` and roofline plots are outputted into PDFs as
+   ``empirRoof_gpu-0_[datatype1]_..._[datatypeN].pdf`` where datatypes requested through
+    --roofline-data-type option are listed in the file name.
 
 .. code-block:: shell-session