FP8 roofline support (#592)

Adding FP8 datatype to roofline feature in rocprof-compute on MI300-based systems.
FP8 now shows in terminal output and roofline csv, and outputs a standalone PDF.

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

src/rocprof_compute_soc/profile_configs/gfx940/roofline/pmc_roof_perf.txt

@@ -4,6 +4,9 @@ pmc: SQ_INSTS_VALU_ADD_F64   SQ_INSTS_VALU_MUL_F64   SQ_INSTS_VALU_FMA_F64   SQ_
 
 pmc: SQ_LDS_IDX_ACTIVE    SQ_LDS_BANK_CONFLICT    TCP_TOTAL_CACHE_ACCESSES_sum    TCP_TCC_WRITE_REQ_sum    TCP_TCC_ATOMIC_WITH_RET_REQ_sum    TCP_TCC_ATOMIC_WITHOUT_RET_REQ_sum
 
+#ROOF:MI300
+pmc: SQ_INSTS_VALU_MFMA_MOPS_F8
+
 range:
 gpu:
 kernels: