lib/systems/architecures: Add generic inferiors for x86-64 AMD

      sierraforest = [ "alderlake" ] ++ inferiors.alderlake;

      # x86_64 AMD

      # TODO: fill this (need testing)

      btver1 = [ ];

      btver2 = [ ];

      bdver1 = [ ];

      bdver2 = [ ];

      bdver3 = [ ];

      bdver4 = [ ];

      # TODO: fill in specific CPU architecture inferiors

      btver1 = [ "x86-64" ];

      btver2 = [ "x86-64-v2" ] ++ inferiors.x86-64-v2;

      bdver1 = [ "x86-64-v2" ] ++ inferiors.x86-64-v2;

      bdver2 = [ "x86-64-v2" ] ++ inferiors.x86-64-v2;

      bdver3 = [ "x86-64-v2" ] ++ inferiors.x86-64-v2;

      bdver4 = [ "x86-64-v3" ] ++ inferiors.x86-64-v3;

      # Regarding `skylake` as inferior of `znver1`, there are reports of

      # successful usage by Gentoo users and Phoronix benchmarking of different

      # `-march` targets.