add fp8_fp8 in perfRunner

[umangyadav]

Running python3 tuningRunner.py --op conv --tuning-space=full --config="convfp8_fp8 -F 1 -f GNC01 -I NGC01 -O NGC01 -n 1 -c 128 -H 56 -W 56 -k 256 -y 1 -x 1 -p 0 -q 0 -u 1 -v 1 -l 1 -j 1 -g 1" doesn't work without this fix.

With this fix, it runs correctly. May need to do some more fixes for other FP8 types later on.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.45%. Comparing base (a4e8230) to head (1d96cac).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1707      +/-   ##
===========================================
- Coverage    78.52%   78.45%   -0.08%     
===========================================
  Files          100      100              
  Lines        28346    28346              
  Branches      4130     4130              
===========================================
- Hits         22260    22240      -20     
- Misses        4426     4434       +8     
- Partials      1660     1672      +12     

Flag	Coverage Δ
mfma	78.45% <ø> (-0.08%)	⬇️

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